Last Updated: July 22, 2026
Who we are
Our website address is: https://ydstrong.cn
We are Shenzhen Ydstrong Smart Health Technology Co., Limited, a company registered in China. This privacy policy applies solely to information collected through our website https://ydstrong.cn (the “Site”).
If you have any questions about this privacy policy, you can contact us at:
- Email: info@ydstems.com
- Address: Shenzhen, China
What Data We Collect via This Site
We collect limited data through this Site. The data we collect falls into two categories: (1) information you voluntarily provide to us, and (2) information automatically collected when you visit our Site.
Information You Provide to Us (Contact Form Submissions)
Our Site provides a contact form for business inquiries. When you submit a message through this form, we collect the following information:
- Your full name
- Your company name
- Your email address
- Your WhatsApp number (if provided)
- Any additional information you choose to include in your message
This information is collected solely for the purpose of responding to your business inquiries, providing information about our products, and facilitating potential business cooperation. We do not use this information for marketing purposes without your explicit consent, and we do not share this information with any third parties except as necessary to respond to your inquiry (such as forwarding your message to relevant internal departments).
Automatically Collected Server Log Information
When you visit our Site, our servers (hosted in the United States) automatically record standard log information. This may include:
- Your IP address
- Browser type and version
- Operating system
- Referring website URL
- Pages you visit on our Site
- Date and time of your visit
- Time spent on each page
This information is collected for:
- Site security and fraud prevention
- Troubleshooting and performance optimization
- Understanding general traffic patterns (in aggregate, not individually)
Cookies
We do not use cookies on this Site for tracking purposes. Our Site does not set any analytics cookies, marketing cookies, or functional cookies (other than those strictly necessary for server operations, which do not store personal data).
If this changes in the future, we will update this policy and implement appropriate consent mechanisms.
How We Use Your Data
The data we collect is used for the following purposes only:
| Purpose | Data Used |
| Responding to business inquiries and providing product information | Name, company, email, WhatsApp, message content |
| Site security and protection against attacks | Server logs (IP address, timestamps) |
| Performance monitoring and troubleshooting | Server logs |
| Understanding search traffic patterns | Google Search Console (aggregated data) |
| Improving our Site content and structure | Google Search Console + aggregated log analysis |
We do not use your data for marketing or advertising purposes without your explicit consent. We do not sell or rent your data to any third party.
Where We Store Your Data
All data collected through our Site is stored on cloud servers located in:
United States (Silicon Valley 1)
These servers are operated by our cloud service provider and managed by our company. The provider is contractually obligated to process data only on our instructions and to implement appropriate security measures.
International Data Transfers
Our company is registered in China. However, our servers are located in the United States. This means that when you access our Site from the European Union (or anywhere else), your information (such as your IP address in server logs and the information you submit through our contact form) is transferred to and processed in the United States.
For users located in the European Union, we ensure that such transfers comply with the EU General Data Protection Regulation (GDPR) by relying on:
- Standard Contractual Clauses (SCCs) adopted by the European Commission, which provide adequate safeguards for personal data transferred to third countries. These clauses are incorporated into our Data Processing Agreement with our cloud service provider (Tencent Cloud).
If you wish to obtain a copy of the SCCs we rely on, please contact us at info@ydstems.com.
How Long We Retain Your Data
| Data Type | Retention Period |
| Contact form submissions (name, company, email, WhatsApp, message) | Retained for 2 years from the date of submission, then securely deleted, unless a business relationship is established and separate data processing terms apply |
| Server logs (IP addresses, access records) | Retained for 90 days, then automatically deleted or anonymized |
| Google Search Console data | Retained by Google in accordance with their policies (aggregated, non-personal) |
We do not retain any personal data beyond what is necessary for the purposes stated in this policy.
Your Rights (For EU Users)
If you are located in the European Union, you have the following rights under the GDPR regarding your personal data:
| Right | What It Means |
| Right to Access | You can request a copy of the personal data we hold about you. |
| Right to Rectification | You can request that we correct inaccurate or incomplete data. |
| Right to Erasure | You can request that we delete your personal data, subject to certain exceptions. |
| Right to Restrict Processing | You can request that we limit how we use your data. |
| Right to Data Portability | You can request a machine-readable copy of your data to transfer to another provider. |
| Right to Object | You can object to our processing of your data in certain circumstances. |
To exercise any of these rights, please contact us at:
- Email: info@ydstems.com
We will respond to your request within 30 days as required by the GDPR. If your request is complex, we may extend this by up to 60 days (and will notify you in advance).
You also have the right to lodge a complaint with your local data protection authority (DPA) if you believe we have not handled your data properly.
Third-Party Links
Our Site may contain links to third-party websites. This privacy policy does not apply to those websites. We encourage you to review the privacy policies of any third-party sites you visit.
Embedded Content from Other Websites
Articles or pages on our Site may include embedded content (such as videos or images). Embedded content from other websites behaves exactly as if you visited that other website.
These third-party websites may collect data about you, use cookies, embed additional third-party tracking, and monitor your interaction with that embedded content. We have no control over and are not responsible for the data collection practices of these third-party sites.
Security Measures
We take reasonable technical and organizational measures to protect the data we collect, including:
- HTTPS/TLS encryption for all data transmitted between your browser and our Site
- Firewall protection
- Regular security reviews and updates to our server infrastructure
- Restricted access to personal data (such as contact form submissions) to authorized personnel only
While we strive to protect your data, no method of transmission over the Internet is 100% secure. We cannot guarantee absolute security.
Children’s Privacy
Our Site is not directed at children under the age of 16. We do not knowingly collect personal data from minors. If you believe a child has provided us with personal data, please contact us and we will promptly delete it.
Changes to This Privacy Policy
We may update this privacy policy from time to time. When we do, we will:
- Change the “Last Updated” date at the top of this page
- Post the updated policy on this page
We encourage you to review this page periodically. Your continued use of our Site after any changes constitutes your acceptance of the updated policy.
Contact Us
If you have any questions, concerns, or requests regarding this privacy policy or our data practices, please contact us