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Privacy Policy

What we process, why we process it, how long we keep it, and what rights you have.

Last updated: 29 September 2026

1. Controller

The operator of this website and the controller responsible for data processing is Shenzhen Yusong Technology Co., Ltd. (深圳羽颂科技有限公司), Room 1806, Block B, Zhenzhong Times Plaza, 99 Longcheng Avenue, Shangjing Community, Longcheng Street, Longgang District, Shenzhen, Guangdong, China.

For data protection matters please contact: billy@hitama.net.

2. What data we process

This website processes two kinds of data only: (1) information you enter yourself in the enquiry form; and (2) technical access data generated automatically while you browse. We do not profile users, we never sell or rent data to third parties, and we do not use it for advertising.

3. Hosting and server logs

This site is hosted on a server at Alibaba Cloud in Singapore. When you visit, the server records the technical information necessary to serve the site and keep it secure — such as the time of access, the requested address, the browser identifier and the IP address.

  • Legal basis: Art. 6(1)(f) GDPR (legitimate interest in the security and stable operation of the website).

4. Enquiry form and enquiries

When you submit an enquiry we collect what you enter in the form: name, company, country, email address, product of interest and your message, together with a record of which page the form was submitted from.

That information is used for one purpose only: to answer your enquiry, quote, send you material and — if you wish — continue the business conversation.

  • Legal basis: Art. 6(1)(b) GDPR (performance of a contract or steps taken at your request before entering into one) and Art. 6(1)(f) GDPR (legitimate interest in responding to business enquiries).
  • Recipients: our sales mailbox, on an enterprise mail service provided by Alibaba Cloud. We do not pass enquiry data to any third party for that party’s own purposes.

5. Website analytics (no cookies)

We use a self-hosted, first-party statistic to understand how the site is used — which pages are read, where visitors arrive from, how long they stay. It relies on no third-party service and does not track you across sites.

For this we record: the page path, the previous page on this site, the external referrer, the page language, the dwell time, the browser identifier (truncated to 200 characters) and the IP address.

  • The session marker for this statistic is held in the browser’s sessionStorage (a random 16-character hexadecimal value) and disappears when the tab is closed. This statistic sets no cookies.
  • Legal basis: Art. 6(1)(f) GDPR (legitimate interest in understanding use of the site and detecting faults and abuse).
  • Retention: at most 14 months, then deleted automatically.
  • Separately, with your consent we also run Google Analytics 4 — see Section 6.

6. Cookies

By default we set no cookies while you browse this site.

With your consent, we use Google Analytics 4 (provided by Google LLC) to understand how visitors use this site — for example which country or region they are in and which pages are read. Only after you consent do we allow the cookies that Google sets for this purpose; if you decline, no cookies are set and the site works exactly as before.

We store your choice (consent or decline) in your browser’s local storage so we do not have to ask on every visit. You can change it at any time via "Analytics settings" in the footer.

Legal basis: your consent (Art. 6(1)(a) GDPR). Retention: Google Analytics 4 data is kept in Google’s systems for up to 2 months by default.

7. Recipients and processors

To run the website we use the following service providers, who process data only on our instructions:

  • Alibaba Cloud: hosting for the website and the database, server located in Singapore.
  • Alibaba Cloud enterprise mail: sending and receiving enquiry email.
  • Google LLC (United States): with your consent, for website analytics via Google Analytics 4. The data is processed in the United States; the transfer is safeguarded under the EU–US Data Privacy Framework.

8. Transfers to third countries

Our company is established in China and the website and database are hosted in Singapore. Your data is therefore transferred to and processed in countries outside the European Union.

We take appropriate safeguards: we choose service providers bound by contract, and we transfer only the data necessary for the purposes described above. You may ask us for further detail using the contact details above.

9. How long we keep data

Website analytics data is kept for at most 14 months and then deleted automatically.

Enquiry records are kept for as long as is necessary to handle the enquiry and any business relationship that follows from it; statutory retention obligations remain unaffected.

10. Your rights

Within the scope of applicable law you have the right to access the personal data we hold about you (Art. 15), to rectification (Art. 16), to erasure (Art. 17), to restriction of processing (Art. 18), to data portability (Art. 20), and to object to processing on grounds relating to your particular situation (Art. 21).

You also have the right to lodge a complaint with a supervisory authority — usually the authority of the member state of your habitual residence, your place of work or the place of the alleged infringement.

11. Automated decision-making

We do not carry out automated decision-making, and we do not use analytics to build a profile of you. With your consent, Google Analytics 4 reports aggregate, anonymous figures (such as country and the pages read) that we use only to improve the website; they are not used for advertising, targeting, or any decision about you.

12. Changes to this policy

If the way we process data changes, we will update this page and the "last updated" date above.