Privacy Policy of KEYTOP Merchant Assistant 

Update Date: February 6, 2026 

Effective Date: February 6, 2026 

The products/services of KEYTOP Merchant Assistant are provided by Xiamen KEYTOP Communication Technology Co., Ltd. (hereinafter referred to as "we" or "us") (registered address: Unit 301, No. 58 Guanri Road, Software Park, Xiamen). We highly value the protection of your personal information and privacy. We understand the importance of your personal information and will adopt appropriate security measures in accordance with legal and regulatory requirements and industry-standard security practices to protect your personal information. Through this Privacy Policy, we aim to clearly explain how we handle your personal information when you use our products/services, as well as the methods we provide for you to access, correct, delete, and protect this information. 

This policy will help you understand the following: 

1. How we collect and use your personal information 

2. How we use cookies and similar technologies 

3. How we share, transfer, and publicly disclose your personal information 

4. How we store and protect your personal information 

5. How you can manage your personal information 

6. Protection of minors' personal information 

7. How this Privacy Policy is updated 

8. How to contact us 

【Special Note】 Please read and fully understand this Privacy Policy (key contents have been bolded for your special attention) before using our products/services, and make your corresponding choice. Once you use or continue to use our products/services, you agree that we will process your relevant information in accordance with this Privacy Policy. 

If you have any questions about this Privacy Policy or related matters, please contact us through the "How to Contact Us" section. 

Please note that this policy does not apply to third-party products/services accessed through our products/services ("other third parties," including your transaction counterparties, any third-party websites, and third-party service providers, etc.). For such cases, please refer to the privacy policies or similar statements of those third parties. 

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1. How We Collect and Use Your Personal Information 

When you use our products/services, the scenarios in which you need/choose to authorize us to collect and use personal information include: 

1. To provide you with the basic functions of our products/services, you need to authorize us to collect and use necessary information. If you refuse to provide such necessary information, you will not be able to use our products/services normally. 

1.1 Information you directly provide and we actively collect 

2. To provide you with extended functions of our products/services, you may choose to authorize us to collect and use information. If you refuse to provide such information, you will not be able to use the relevant additional functions or achieve the intended functional effects, but it will not affect your normal use of the basic functions of our products/services. 

(I) Scenarios Where You Need to Authorize Us to Collect and Use Personal Information 

We will follow the principles of legality, legitimacy, and necessity to collect and use your personal information for the following purposes: 

1. To help you become our user 

We provide services through your KEYTOP Merchant Assistant account. When you register as our user, you need to provide a mobile phone number to create an account and complete relevant online identity information (such as username, password, etc.). After you authorize login with your KEYTOP Merchant Assistant account, we will obtain relevant account information (such as username) based on your authorization. 

2. To provide you with security 

To ensure the security of your account, transactions, and system operations, and to comply with legal and regulatory requirements and our agreement rules, with your authorization, we will obtain your device information during your use of our products/services, including device attributes, connection, and status information, such as device model, device identifiers (e.g., IMEI/Android ID/IDFA/OPENUDID/GUID/IP address/OAID, SIM card IMSI, ICCID, etc.), device MAC address, software list, telecom operator, device serial number, and other hardware/software characteristics. 

3. Information we may collect indirectly 

To complete identity verification, ensure account security, confirm transaction status, and provide after-sales and dispute resolution services, with your authorization, we may obtain your personal information from third parties (e.g., through your chosen transaction counterparties and directly involved third-party information systems, payment institutions, etc., collecting transaction and payment information related to transaction progress to process your orders and ensure smooth service completion). We will comply with legal and regulatory requirements and third-party agreements, obtain relevant information from KEYTOP Merchant Assistant's affiliates and partners with your authorization, and use this information after confirming the legality of its source. 

4. App self-start or associated launch 

To ensure the app can receive push notifications normally when closed or running in the background, this app must use the self-start capability. There will be a certain frequency of system broadcasts waking up the app for self-start or associated launch, which is necessary for implementing functions and services. 

5. Network connection and service optimization needs 

When you use mobile networks or connect to Wi-Fi, we collect your IP address, network type (e.g., 4G/5G/Wi-Fi), Wi-Fi name (SSID), and router identifier (BSSID). This information is collected to: 

(1) Ensure basic connectivity of product/service functions, enabling normal communication between your device and our servers. 

(2) Assist in rough location and parking lot identification when GPS and other precise positioning signals are weak, helping to quickly determine your parking lot range to provide corresponding services. 

(3) Optimize network connection experience, diagnose and resolve network faults, and improve service stability. 

6. Invoice issuance notifications 

When you apply for invoice issuance, we will collect your invoicing information and email address. This information is collected to help you apply for invoice issuance and send related email notifications. 

(II) Scenarios Where You May Choose to Authorize Us to Collect and Use Personal Information 

To provide our services, you may choose to use our extended functions. We will collect and use the following information in accordance with legal provisions and based on your specific authorization. Such information will be collected in specific functions and business scenarios you choose. If you do not provide this information, it will not affect your use of the basic functions of Parking Cloud Assistant. 

1. Extended functions based on camera authorization 

You may choose to enable the system's camera permission to authorize KEYTOP Merchant Assistant to access your camera through functions like taking photos and recording videos, allowing you to publish content via photos or videos. If you need to record and publish audio videos, you also need to enable the microphone permission. We will collect the information you upload and publish. You can disable this function in system permissions. Once disabled, you may not be able to use QR code login functions or submit work orders/feedback via photos or videos, but it will not affect your use of KEYTOP Merchant Assistant's basic functions. 

2. Extended functions based on photo album authorization 

You may choose to enable the system's photo album permission to authorize us to access your photo album by actively uploading images or videos, allowing you to publish content via uploaded photos or videos. We will collect the information you choose to upload and publish. You can disable this function in system permissions. Once disabled, you may not be able to submit work orders/feedback via images or videos, but it will not affect your use of KEYTOP Merchant Assistant's basic functions. 

3. Providing invoice delivery services 

When you need to issue an invoice, we may require certain information, including your name, photos, address, postal code, identity information, company information, contact details, and bank or payment transaction account information. This information helps us deliver invoices to you. If you refuse to provide such information, we will not be able to complete invoice issuance. 

4. Third-party SDKs 

To better implement software service functions, our application embeds third-party SDKs to enhance your product experience. 

Embedded Third-Party SDK Directory: 

I. Android Embedded Third-Party SDKs 

1. Umeng+ Mobile Statistics SDK 

   - Personal Information Involved: Device information (Android ID/IDFA/IDFV/OAID/OpenUDID/GUID; optional - IMEI/IMSI/ICCID), network information, location information (optional), app list (optional). 

   - Purpose: App data statistical analysis to quickly locate issues when problems occur. 

   - Partner: Umeng Tongxin (Beijing) Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://www.umeng.com/page/policy 

2. Umeng+ Message Push SDK 

   - Personal Information Involved: Device information (Android ID/IDFA/IDFV/OAID/OpenUDID/GUID; optional - IMEI/IMSI/ICCID), network information, location information (optional), app list (optional). 

   - Purpose: Provide parking lot message push services. 

   - Partner: Umeng Tongxin (Beijing) Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://www.umeng.com/page/policy 

3. Umeng+ Application Performance Monitoring SDK 

   - Personal Information Involved: Device information (Android ID/IDFA/IDFV/OAID/OpenUDID/GUID; optional - IMEI/IMSI/ICCID), network information, location information (optional). 

   - Purpose: Obtain current device version to quickly locate issues when problems occur. 

   - Partner: Umeng Tongxin (Beijing) Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://www.umeng.com/page/policy 

4. WeChat OpenSDK Android 

   - Personal Information Involved: MAC address, unique device identifier, location information, app list, phone number, Wi-Fi address, device serial number. 

   - Purpose: Launch WeChat customer service chat, WeChat Pay, and WeChat sharing. 

   - Partner: Shenzhen Tencent Computer Systems Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://support.weixin.qq.com/cgi-bin/mmsupportacctnodeweb-bin/pages/RYiYJkLOrQwu0nb8 

5. App Payment Client SDK 

   - Personal Information Involved: MAC address, unique device identifier, location information, app list, phone number, Wi-Fi address, device serial number. 

   - Purpose: Launch Alipay payment. 

   - Partner: Alipay (China) Network Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://render.alipay.com/p/yuyan/180020010001196791/preview.html?agreementId=AG00000132 

6. Umeng Anti-Crash SDK Partner: Zuanshi SDK (com.uc.crashsdk) 

   - Personal Information Involved: Device brand/model, device crash logs. 

   - Purpose: Store backup crash logs for crash analysis, compatibility analysis, and performance monitoring. 

   - Partner: Guangzhou Dongjing Computer Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://yueying-docs.effirst.com/privacy.html 

7. 360 App Protection SDK 

   - Personal Information Involved: OAID (anonymous device identifier). 

   - Purpose: Detect app faults and diagnostics, app security protection, piracy detection, threat environment detection, to help users quickly resolve exceptions. 

   - Partner: Beijing Qihu Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://jiagu.360.cn/#/global/help/295 

II. iOS Embedded Third-Party SDKs 

1. Umeng+ Mobile Statistics SDK 

   - Personal Information Involved: Device information (Android ID/IDFA/OAID/OpenUDID/GUID; optional - IMEI/IMSI/ICCID), network information, location information (optional), app list (optional). 

   - Purpose: App data statistical analysis to quickly locate issues when problems occur. 

   - Partner: Umeng Tongxin (Beijing) Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://www.umeng.com/page/policy 

2. Number Authentication SDK (iOS) 

   - Personal Information Involved: Network type, Wi-Fi type, operator information, IMSI, IP address, IDFV, device serial number. 

   - Purpose: Provide one-click login service using this device's number. 

   - Partner: Tencent Cloud Computing (Beijing) Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://cloud.tencent.com/document/product/1415/65372 

3. WeChat OpenSDK iOS 

   - Personal Information Involved: MAC address, unique device identifier, location information, app list, phone number, Wi-Fi address, device serial number. 

   - Purpose: Launch WeChat customer service chat, WeChat Pay, and WeChat sharing. 

   - Partner: Shenzhen Tencent Computer Systems Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://support.weixin.qq.com/cgi-bin/mmsupportacctnodeweb-bin/pages/RYiYJkLOrQwu0nb8 

4. Umeng Anti-Crash SDK Partner: Zuanshi SDK (com.uc.crashsdk) 

   - Personal Information Involved: Device brand/model, device crash logs. 

   - Purpose: Store backup crash logs for crash analysis, compatibility analysis, and performance monitoring. 

   - Partner: Guangzhou Dongjing Computer Technology Co., Ltd. 

   - Sharing Method: SDK collection. 

   - Link: https://yueying-docs.effirst.com/privacy.html 

(III) Exceptions to Consent 

Please be aware that in the following circumstances, we may collect and use personal information without your authorization: 

1. Related to national security and defense security; 

2. Related to public safety, public health, or major public interests; 

3. Related to criminal investigations, prosecutions, trials, and enforcement of judgments; 

4. When it is difficult to obtain consent but necessary to protect the life, property, or other significant legal interests of the data subject or others; 

5. When the personal information has been voluntarily disclosed to the public by the data subject; 

6. When personal information is collected from legally publicly disclosed information, such as legal news reports, government information disclosure, etc., unless you explicitly refuse or the processing infringes on your significant interests; 

7. When necessary for contract fulfillment as requested by you; 

8. When necessary to maintain the security and stable operation of the provided products/services, such as detecting and handling faults; 

9. When necessary for legal news reporting; 

10. When academic research institutions conduct statistical or academic research for public interest and de-identify personal information in the results when providing academic research or descriptive outcomes; 

11. Other circumstances stipulated by laws and regulations. 

(V) Device Permission Calls 

To ensure proper implementation of relevant business functions, we need to call necessary permissions based on specific usage scenarios and will prompt you with a pop-up before doing so. Detailed permission call descriptions are as follows: 

1. iOS System Permission Call Description 

2. Android System Permission Call Description 

3. Harmony OS System Permission Call Description 

You can choose to disable some or all permissions in your device settings, which may result in corresponding business functions being unavailable or failing to achieve expected effects. 

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2. How We Use Cookies and Similar Technologies 

(I) When you use KEYTOP Merchant Assistant products or services, to provide you with a more relaxed access experience, we may use various technologies to collect and store information. During this process, one or more cookies or anonymous identifiers may be sent to your device. This is done to understand your usage habits, save you from repeatedly entering registration information, or help determine the security of your account. 

(II) When you use KEYTOP Merchant Assistant products or services, we may also use cookies and similar technologies to collect information about your preferences for consultation or data analysis, improve product services and user experience, enhance advertising effectiveness, detect and prevent security risks in a timely manner, and provide better services to users and partners. 

(III) We will not use cookies for any purposes other than those described in this policy. You can retain or delete cookies according to your preferences. You can clear all cookies saved in the software, and upon manual clearing, your relevant information will be deleted. 

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3. How We Share, Transfer, and Publicly Disclose Your Personal Information 

(I) Sharing 

KEYTOP Merchant Assistant will treat your information with diligent care and will not share your personal information with any company, organization, or individual outside KEYTOP Merchant Assistant and its affiliates, except in the following cases: 

1. With your explicit authorization or consent obtained in advance; 

2. As required by applicable laws, legal procedures, or mandatory administrative/judicial requirements; 

3. When necessary to protect the interests, property, or safety of KEYTOP Merchant Assistant, its affiliates or partners, you, other KEYTOP Merchant Assistant users, or the public within the scope permitted by laws; 

4. When sharing your information is necessary to realize core functions of our products/services or provide services you need; 

5. To handle disputes or controversies between you and others as per your request; 

6. As stipulated in agreements signed with you (including electronically signed agreements and corresponding platform rules) or other legal documents; 

7. For academic research purposes; 

8. For purposes in line with social public interests under laws and regulations. 

(II) Our authorized partners may include the following types: 

1. Software service providers, smart device providers, and system service providers. 

When KEYTOP Merchant Assistant combines with third-party software, devices, and systems to provide basic location services, we may collect your location and device information based on your system location authorization and settings, and provide it to the system. In special circumstances, this may include additional personal information you fill in. If you refuse such collection and use, you need to disable related services in device settings; KEYTOP Merchant Assistant cannot automatically or manually disable related services. 

2. Suppliers, service providers, and other partners. 

We may send information to suppliers, service providers, and other partners that support our business, including those providing technical infrastructure services, functional services within or linked to products, analyzing service usage, measuring advertising/service effectiveness, and providing customer service and surveys. 

3. Parking lot management parties. 

The Merchant Assistant you use is authorized by the parking lot to add your account. Your relevant usage information will be synchronized according to the parking lot's requirements to facilitate daily transaction management and control. 

4. Financial, credit, and other partners. 

Based on agreements and documents signed with relevant partners, or legal/regulatory requirements, mandatory government orders, or legitimate needs of financial/credit review institutions, your personal information may be comprehensively counted, analyzed, or processed, and results shared with partners to determine credit status, screen high-quality users, or reduce credit bad debts. 

(II) Sharing Requirements 

Before sharing information, we will conduct data security capability assessments of third parties sharing personal information, sign strict data security and confidentiality agreements with them, and require them to handle the information in accordance with our instructions, this Privacy Policy, and relevant confidentiality and security measures. 

Transfer 

We will not transfer your personal information to any company, organization, or individual, except in the following cases: 

1. With your explicit consent or authorization obtained in advance; 

2. As required by applicable laws, legal procedures, or mandatory administrative/judicial requirements; 

3. As stipulated in agreements signed with you (including electronically signed agreements and corresponding platform rules) or other legal documents; 

4. In the event of mergers, acquisitions, asset transfers, or similar transactions involving personal information transfer, we will require the new company/organization holding your personal information to continue to be bound by this Privacy Policy; otherwise, we will require them to re-obtain your authorization and consent. 

Public Disclosure 

We will only publicly disclose your personal information in the following cases and with security protection measures that meet industry standards: 

1. Upon your request, with your explicit consent, disclosing the personal information you specify; 

2. As required by laws, regulations, mandatory administrative or judicial requirements, we may publicly disclose your personal information as necessary. Under the premise of complying with laws and regulations, when receiving such information disclosure requests, we will require corresponding legal documents (such as subpoenas or investigation letters). We believe that information requested should be as transparent as possible within the legal scope. We carefully review all requests to ensure they have legal grounds and are limited to data legally accessible for specific investigations by law enforcement. To the extent permitted by laws and regulations, disclosed documents are protected by encryption keys. 

(1) Transfer Exceptions 

According to relevant laws, regulations, and national standards, we may share, transfer, or publicly disclose your personal information without your consent in the following circumstances: 

(1) Directly related to national security and defense security; 

(2) Directly related to public safety, public health, or major public interests; 

(3) Directly related to criminal investigations, prosecutions, trials, and enforcement of judgments; 

(4) When it is difficult to obtain your consent but necessary to protect your life, property, or other significant legal interests; 

(5) When you have voluntarily disclosed personal information to the public; 

(6) When personal information is collected from legally publicly disclosed information, such as legal news reports, government information disclosure, etc. 

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4. How We Store and Protect Your Personal Information 

(I) Storage Location 

Your personal information will be stored within the People's Republic of China, except when you use KEYTOP Merchant Assistant products/services overseas requiring data transmission. If cross-border transmission is necessary, we will separately obtain your authorization and consent. 

(II) Storage Period 

Unless otherwise stipulated by laws and regulations, KEYTOP Merchant Assistant will retain your information for the following periods: 

1. During your use of KEYTOP Merchant Assistant products/services, we will continuously retain your information unless you delete it or cancel your account; 

2. Upon deletion of personal information or account cancellation, KEYTOP Merchant Assistant will immediately stop using user information and anonymize it, but reserves the right to retain your information separately for up to 36 months; 

3. After anonymization, your personal information will form data that can be used and circulated, and KEYTOP Merchant Assistant's storage and processing of such data require no further notice or consent from you. 

(III) Security Measures 

1. KEYTOP Merchant Assistant will adopt appropriate industry-standard security measures and technical means to store and protect your personal information to prevent loss, misuse, unauthorized access, disclosure, tampering, or destruction, such as SSL encryption for transmission, encrypted storage, restricted data center access, use of dedicated network channels, and network proxies. Your personal information is stored on password-controlled servers with restricted access. 

2. We have established a personal information protection department and relevant internal control systems, applying the principle of minimum necessary authorization to staff who may access your information. That is, we only allow employees of KEYTOP Merchant Assistant and its affiliates who need to know such information to access or modify it after reasonable identity verification. We strictly require them to fulfill confidentiality and security obligations; failure to do so will result in legal liability or termination of cooperation with KEYTOP Merchant Assistant. 

3. To protect your information security, if user personal information is incorrect, KEYTOP Merchant Assistant will strictly verify and confirm the applicant's identity before allowing access, correction, or deletion of relevant information (unless KEYTOP Merchant Assistant is legally required to retain it). 

(IV) Special Notes 

1. The internet environment is not 100% secure. We will try our best to ensure the security of any information you send to us. However, communication methods such as email, instant messaging, social software, and transaction platforms with other users cannot be guaranteed to be fully encrypted. Please protect your personal information during interactions. 

2. Please understand that due to the rapid development of computer and internet technology and synchronization speed limitations, various malicious or non-malicious attacks may exist or emerge. Although KEYTOP Merchant Assistant continues to strive to enhance and strengthen security measures to protect your information from accidental or destructive loss, it cannot guarantee 100% information security. 

3. The systems, communication networks, and hardware devices you use for products/services are beyond KEYTOP Merchant Assistant's control. Please be aware and protect your personal information security. 

(V) Security Incidents 

1. In the event of a personal information security incident, we will promptly notify you in accordance with laws and regulations about the basic situation, possible impacts, measures taken or to be taken, suggestions for independent prevention and risk reduction, and remedial actions. We will notify you through reserved contact methods such as in-app notifications, SMS, phone calls, or emails. If individual notification is impractical, we will issue announcements through reasonable and effective means. 

2. We will promptly address system vulnerabilities, network attacks, virus infections, and network intrusions. In case of network security incidents, we will follow emergency response plans, take timely remedial measures, and report to relevant authorities as required. 

3. If our physical, technical, or management protective measures are breached, leading to unauthorized access, disclosure, tampering, or destruction of information and damage to your legal rights, we will bear corresponding legal liability. 

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5. How You Can Manage Your Personal Information 

KEYTOP Merchant Assistant respects your attention to personal information and provides methods for you to manage it. You have the right to query, correct, manage, and delete your information, as well as protect your privacy and security. 

(I) Right of Access 

Except for exceptions stipulated by laws and regulations, we strive to ensure you can smoothly access your personal information whenever you use our services. You can exercise your access rights through the following methods: 

1. Account Information: If you wish to access or edit profile information in your account, change passwords, add security information, etc., you can do so within the product you use. 

2. Usage Information: You can query or clear your search history and comment records within KEYTOP Merchant Assistant products. 

(II) Right of Correction 

When you need to update your personal information or find errors in our processing of your personal information, you have the right to make corrections or updates. You can do so within KEYTOP Merchant Assistant products or submit correction requests through feedback/error reporting. Before updates or corrections, we may require identity verification before processing your request. 

(III) Right of Deletion 

1. You can delete your information through settings or functional controls within the product. 

2. In the following circumstances, you may request deletion of personal information: 

a. If our processing of personal information violates laws and regulations; 

b. If we collect or use your personal information without your consent; 

c. If our processing of personal information violates agreements with you; 

d. If you cancel your account, we will delete or anonymize your personal information; 

e. If we terminate product operations and services. 

(IV) Right of Withdrawal 

1. You can withdraw some authorizations by unbinding, modifying personal settings, deleting relevant information, or disabling functions. 

2. Upon withdrawal of consent or authorization, we cannot continue to provide corresponding services and will no longer process your personal information. However, withdrawal does not affect personal information processing carried out based on prior consent or authorization. 

(V) Right of Cancellation 

KEYTOP Merchant Assistant provides a cancellation function within the product. You can access the "Settings" page in the app and click "Cancel Account" for online operation. Once canceled, you will not be able to use services associated with the account, so please proceed with caution. Upon successful cancellation, we will delete your personal information or anonymize it as required by laws and regulations. 

If you cannot access, correct, or delete your personal information or cancel your account through the above methods, or if you believe KEYTOP Merchant Assistant has collected or used your personal information in violation of laws, you can contact us through customer service or other methods provided in this Privacy Policy. For security, we may require you to provide proof of identity and justification. We will respond within 15 days after receiving your feedback and verifying your identity. For reasonable requests, we generally do not charge fees, but for repeated or excessive requests, we may charge a reasonable cost. We may refuse requests that are unfounded, require excessive technical efforts (e.g., developing new systems or fundamentally changing current practices), pose risks to others' legal rights, or are impractical (e.g., involving backup tape-stored information). 

(VI) Independent Management and Control of Targeted Push Notifications 

Message Push – If you do not wish to receive message notifications on the App page, you can refuse to receive them during initial installation or disable notification functions in the mobile operating system's "Notification" center. 

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6. Protection of Minors' Personal Information 

KEYTOP Merchant Assistant attaches great importance to protecting minors' personal information. Our website and services are primarily intended for adults. If you are a minor, we recommend that your parents or guardians read this Privacy Policy carefully and use our services or provide information only with their consent. For collection of minors' personal information with parental/guardian consent, we will only use, share, transfer, or disclose such information as permitted by laws, with explicit parental/guardian consent, or when necessary to protect the minor. 

If we discover that we have collected a minor's personal information without verifiable parental/guardian consent, we will endeavor to delete the relevant data as soon as possible. 

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7. Notification and Revision 

(I) As KEYTOP Merchant Assistant's business evolves and to provide better services, this Privacy Policy may be updated. However, without your explicit consent, we will not reduce your rights under this Privacy Policy. We will notify you of updates through announcements on KEYTOP Merchant Assistant's website, mobile platforms, or other appropriate methods before taking effect. Please visit KEYTOP Merchant Assistant to stay informed about the latest Privacy Policy. 

(II) For significant changes, we will provide more prominent notifications (through methods such as emails, SMS, or special prompts on browsing pages, explaining specific changes). 

Significant changes include but are not limited to: 

1. Significant changes in our service model, such as purposes of processing personal information, types of personal information processed, and ways personal information is used; 

2. Significant changes in ownership structure, organizational structure, etc., such as business adjustments, bankruptcy, mergers and acquisitions leading to owner changes; 

3. Significant changes in objects of personal information sharing, transfer, or public disclosure; 

4. Significant changes in your rights regarding personal information processing and their exercise methods; 

5. Changes in our personal information security responsible department, contact methods, or complaint channels; 

6. High risks identified in personal information security impact assessments. 

(III) We will also archive old versions of this policy for your reference. 

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8. How to Contact Us 

(I) If you have any questions, comments, or suggestions regarding this Privacy Policy or your personal information, please contact us through complaints within the KEYTOP Merchant Assistant app, customer service hotline, etc. 

(II) We have established a dedicated personal information protection department (or officer). You can contact us via support@rd.keytop.com.cn. 

(III) We will generally respond within fifteen days. If you are dissatisfied with our response, especially if our personal information processing harms your legal rights, you may also file complaints or reports with regulatory authorities such as cyberspace administration, telecommunications, public security, and industry and commerce.