1. Introduction

Rank1688 ("we," "us," or "our") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, share, and safeguard your personal information when you use our vendor and product ranking platform for 1688.com suppliers (the "Service").

By using our Service, you consent to the data practices described in this policy. If you do not agree with our practices, please do not use the Service.

2. Information We Collect

2.1 Information You Provide

We collect information you voluntarily provide when using our Service:

2.2 Information Collected Automatically

When you access our Service, we automatically collect:

• Device Information: IP address, browser type, operating system, device identifiers, and screen resolution
• Usage Information: Pages visited, time spent, click patterns, features used, and referring URLs
• Location Information: Approximate location based on IP address (country/region level only)

2.3 Information from Third Parties

• Social Login: If you sign in with Google or Facebook, we receive your name, email, and profile picture from those services
• 1688.com Data: We collect publicly available vendor and product information from 1688.com to power our ranking service

3. How We Use Your Information

We use your information for the following purposes:

3.1 Service Delivery

• Create and manage your account
• Provide access to vendor and product rankings
• Process subscriptions and payments
• Save your favorites and preferences
• Enable data exports within your plan limits

3.2 Communication

• Send account-related notifications (password resets, security alerts)
• Respond to your support requests and inquiries
• Send service updates and important announcements
• Send marketing communications (with your consent, which you can withdraw anytime)

3.3 Improvement and Analytics

• Analyze usage patterns to improve our Service
• Develop new features based on user behavior
• Conduct research and generate aggregated statistics

3.4 Security and Legal

• Detect and prevent fraud, abuse, and security threats
• Enforce our Terms of Service
• Comply with legal obligations and respond to lawful requests

4. How We Share Your Information

We do not sell your personal information. We may share your data only in these circumstances:

4.1 Service Providers

We share data with trusted third parties who help us operate our Service:

• Payment Processing: PayPal (for subscription payments)
• Cloud Infrastructure: Amazon Web Services (for hosting and storage)
• Email Services: Mailgun (for transactional emails)
• Authentication: Firebase (for secure login)
• Analytics: Google Analytics (for usage insights)

These providers are contractually bound to protect your data and use it only for the services they provide to us.

4.2 Legal Requirements

We may disclose your information if required by law, court order, or government request, or to:

• Comply with legal obligations
• Protect our rights, property, or safety
• Prevent fraud or security threats
• Enforce our Terms of Service

4.3 Business Transfers

If Rank1688 is involved in a merger, acquisition, or asset sale, your information may be transferred. We will notify you before your data is transferred and becomes subject to a different privacy policy.

4.4 With Your Consent

We may share your information for other purposes with your explicit consent.

5. Cookies and Tracking Technologies

We use cookies and similar technologies to enhance your experience.

5.1 Types of Cookies

5.2 Managing Cookies

You can control cookies through your browser settings:

• Block all cookies (may affect Service functionality)
• Delete cookies when you close your browser
• Receive alerts before cookies are placed

Note: Disabling essential cookies may prevent you from using certain features.

6. Data Security

We implement robust security measures to protect your information:

6.1 Technical Safeguards

• Encryption: All data transmitted via HTTPS/TLS encryption
• Password Security: Passwords are hashed using bcrypt algorithm
• Access Controls: Role-based access to sensitive systems
• Infrastructure: Hosted on secure cloud platforms with regular security audits

6.2 Organizational Measures

• Limited employee access to personal data on a need-to-know basis
• Regular security training for team members
• Incident response procedures for potential breaches

7. Data Retention

We retain your data only as long as necessary:

After the retention period, we securely delete or anonymize your data.

8. Your Privacy Rights

Depending on your location, you may have rights to access, correct, delete, or export your personal data.

To exercise your rights, update your information in account settings or contact us at support@rank1688.com. We will respond within 30 days.

9. International Data Transfers

Your data may be transferred to and processed in countries outside your residence, including Vietnam (where we are based) and countries where our service providers operate.

When transferring data internationally, we ensure appropriate safeguards:

• Contractual clauses with service providers
• Compliance with applicable data transfer frameworks
• Technical security measures that apply regardless of location

10. Children's Privacy

Our Service is designed for business users and is not intended for children under 16 years of age.

We do not knowingly collect personal information from children. If you believe a child has provided us with personal data, please contact us immediately, and we will delete the information.

11. Third-Party Links

Our Service contains links to 1688.com and other third-party websites. This Privacy Policy applies only to our Service. We are not responsible for the privacy practices of external sites. We encourage you to review the privacy policies of any third-party sites you visit.

12. Changes to This Policy

We may update this Privacy Policy periodically. When we make changes:

• We will update the "Last Updated" date at the top of this page
• For significant changes, we will notify you via email or Service notification
• Your continued use of the Service after changes constitutes acceptance of the updated policy

We recommend reviewing this page periodically to stay informed about how we protect your data.

13. Contact Us

If you have questions about this Privacy Policy, want to exercise your rights, or have concerns about our data practices, please contact us: