Privacy Policy

Who we are

Hefei PreciHub Manufacturing Co., Ltd. operates the CNC Machining Hub website (www.cnc-machining-hub.com). For any question about this policy or about your data, write to sales@cnc-machining-hub.com.

Information we collect

Contact and inquiry information. When you submit the inquiry form we record what you enter: your name and email address (required), and — if you provide them — company, phone number, the part or process you are asking about, quantity and your message.

Technical information. Alongside the form we record technical context that helps us understand where an inquiry came from and how to answer it: the page you landed on, the referring site, the pages you visited in that session, how long the session lasted, whether you switched language, the browser, operating system, device type, time zone and browser language you used, and any advertising click identifier present in the URL.

Delivery providers. The form is delivered through Cloudflare, which also gives us the country, region, city and time zone derived from your connection. We use a Cloudflare Turnstile challenge to keep automated submissions out, and we send the notification email through Resend.

Google API data. We use Google APIs for keyword and market research; see the Google API services section below.

How we use information

We use inquiry information to answer your inquiry, prepare a quotation, and — if you place an order — to produce, inspect and ship the parts.

We use technical information to understand how visitors reach the site, to keep the site working, and to improve the relevance of our technical and commercial content.

We do not sell your information, and we do not use it to build advertising profiles. We do not send marketing email unless you ask us to.

Google API services

CNC Machining Hub may use Google APIs, including the Google Ads API, to retrieve keyword research and advertising-related data for market research and website content planning — for example, to understand which machining topics buyers search for and in which words, so the published technical guides answer the questions actually asked.

We do not use Google Ads API data to create or manage advertising campaigns on behalf of users, and we do not access, store or process personal data through Google API services.

Our use of Google API services complies with the Google API Services User Data Policy, including its Limited Use requirements.

How we share information

Contact-form submissions are emailed to our sales inbox through Cloudflare Email Sending. We do not keep a copy in a website database. Cloudflare provides hosting, form handling, Turnstile and email delivery. After delivery, retention follows the sales mailbox policy.

We do not sell or rent personal information, and we do not share it with advertisers.

Your drawings and models are treated as confidential. We do not publish customer files, and we do not share them with other buyers. Where a production step requires an outside process, files are shared only as needed to produce and inspect your parts.

Cookies and analytics

We do not run advertising or analytics scripts on this site. Two things are stored in your browser anyway:

A Cloudflare Turnstile challenge may set strictly necessary cookies so the challenge can verify your submission.

Your browser session storage may temporarily hold form fields and a submission token while you use the form. They are removed when you close the tab.

• No advertising or analytics cookies are set by us.
• No third-party tracking pixels are loaded.

Data retention

We do not store inquiries in a website database. The notification email may remain in our sales mailbox and is handled under our email-retention practices. Business transaction records may be retained as required by law.

Data security

The website is served over HTTPS and Turnstile checks form submissions. Access to the sales mailbox is limited to personnel who handle inquiries. No method of transmission or storage is completely secure.

No method of transmission or storage is completely secure; we cannot guarantee absolute security, but we review our handling practices when the systems we rely on change.

Your rights

You may ask us to show you, correct or delete the personal information we hold about you, and you may object to further contact at any time — write to sales@cnc-machining-hub.com and we will act on your request, unless we are required to keep a record of a completed transaction.

If you are located in the European Economic Area, the United Kingdom or Switzerland, you have further rights under the GDPR, including the right to lodge a complaint with your local supervisory authority.

Third-party services

Contact-form submissions are emailed to our sales inbox through Cloudflare Email Sending. We do not keep a copy in a website database. Cloudflare provides hosting, form handling, Turnstile and email delivery. After delivery, retention follows the sales mailbox policy.

If we add or replace a processor, this page is updated.

Children's privacy

This website is intended for business users. We do not knowingly collect personal information from children under 16, and the services described here are not offered to consumers.

International data transfers

We are based in China and our processors operate global infrastructure, so information you send may be processed in China and in other countries where Cloudflare and Resend operate. Where required, transfers rely on the safeguards our processors offer — such as the EU Standard Contractual Clauses — together with the measures described in this policy.

Changes to this policy

If this policy changes, the date at the top of this page changes with it. Material changes will be reflected here before they take effect.

Contact us

Questions about this policy or about your data go to sales@cnc-machining-hub.com (CNC Machining Hub, operated by Hefei PreciHub Manufacturing Co., Ltd., Hefei, Anhui, China).