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Privacy Policy

Last updated 25 September 2026

Summary

  • We collect contact details when you request a datasheet or submit an enquiry, along with request metadata and analytics about site use.
  • We use this data to deliver requested documents, respond to enquiries and improve the site. Technical updates are sent only if you opt in.
  • We keep request and enquiry records for as long as reasonably needed to support the enquiry and our ongoing sales relationship.
  • You can ask to access, correct or delete your personal data, or withdraw marketing consent, at any time through the contact page.

Who we are

This policy covers hitechmembranes.com, operated by Hi-Tech Membranes Co., Ltd., a reverse osmosis membrane manufacturer based at 700/273 Amata City Chonburi Industrial Estate Moo 1, Tambon Bankao, Amphur Phanthong, Chon Buri 20160, Thailand. It explains what personal data we collect when you use this site, why we collect it, and how you can control it.

What we collect

When you request a datasheet or submit the contact form: your work email, phone number, company name, and country, plus technical metadata attached to the request (IP address, browser user agent, and — where present — the campaign or QR code that referred you). Phone and company are used to route enquiries to the right regional contact.

Automatically, as you browse: page views, device and browser type, approximate location (derived from IP), and on-site interactions, collected via PostHog analytics. This helps us understand which product pages and datasheets are useful.

Stored only on your device:

  • After a datasheet request, the site saves your work email, phone, company, country and marketing choice in this browser's local storage. Saved details prefill the datasheet form; review and confirm each request. You will see a "Using your saved details" notice with an "Edit details" option.
  • The contact form saves an unsent draft in local storage until a successful submit, and pre-fills empty fields from the saved datasheet details.
  • PostHog keeps its analytics identifier in local storage.
  • You can also clear this site's data in your browser settings.

Why we use it

  • To deliver the datasheet or catalogue you requested, by email and direct download.
  • To respond to enquiries submitted through the contact form.
  • To understand aggregate site usage and improve product pages and documentation.
  • To send occasional technical updates — only if you tick the optional box on the datasheet form or the contact form. Both boxes are unticked by default. A choice saved on the datasheet form is reused for later automatic datasheet requests. You can unsubscribe at any time.

Who we share it with

We use two third-party processors to run this site, and share only the minimum data each needs to perform its function: Resend delivers the transactional emails that carry your datasheet download link, and PostHog provides the on-site analytics described above. Neither is authorized to use your data for their own purposes. We do not sell personal data.

Retention

We keep datasheet-request and contact-form records for as long as reasonably needed to support the enquiry and our ongoing sales relationship with you or your company. You can ask us to delete your record at any time — see "Your rights" below.

International transfers

We manufacture and ship to more than 22 countries, and our systems (including Resend and PostHog) may process data outside your home country. We rely on those providers' own data-protection safeguards for any such transfer.

Your rights

You can ask us to access, correct, or delete the personal data we hold about you, or withdraw marketing consent, at any time. Contact us through the contact page and we'll act on your request without undue delay.

Changes to this policy

We'll update the "last updated" date above whenever this policy changes materially. Continued use of the site after an update means you accept the revised policy.