Legal
Cookie policy
Last updated: September 2026
This policy explains what hongda-chem.com stores in your browser, what our own measurement tool records, and how to change your decision at any time.
What are cookies?
Cookies are small text files a website stores on your device to remember preferences or analyze behavior. Similar technologies, like local storage, keep small pieces of data in your browser without sending them anywhere.
What this site stores
| Item | Type | Purpose | Consent |
|---|---|---|---|
| Your cookie preferences | Local storage | Remember which cookies you allowed or refused | Not required: it stays in your browser and is never transmitted |
| Your language preference | Local storage | Remember the language you chose in the site selector | Not required: it stays in your browser and is never transmitted |
| The opening animation | Session storage | Remember that the intro already played, so it does not repeat as you browse | Not required: it is erased when you close the tab |
| _aa_v | First-party cookie, 1 year | An anonymous id for your browser, so one visitor is not counted twice | Runs by default outside Europe; in Europe it waits until you allow it |
| _aa_s | First-party cookie, 24 hours | Groups the pages you open into a single visit | Same as above |
| _aa_optout | First-party cookie, 1 year | Records that you asked not to be measured | Written only when you switch measurement off |
The three cookies named in the table, _aa_v, _aa_s and _aa_optout, belong to Artisma Analytica, the measurement tool built by Artisma, the agency that develops this site. There is no Google Analytics, no advertising pixel and no other third-party tracker on hongda-chem.com. If that changes, this page changes first.
What the measurement records
Which pages you open, how long you stay, the site you came from, and your device, browser and operating system. It also records the country, region and city your connection reports. Your IP address is not stored: it is turned into an irreversible code, with a key that changes every day, and used only to stop abuse of the service.
Where you are changes what happens
If you visit from the European Union, the European Economic Area, the United Kingdom or Switzerland, nothing is measured until you switch it on in the preferences window. From anywhere else, measurement runs from the first page, with this notice, and you can switch it off whenever you like. If your browser sends a Global Privacy Control or Do Not Track signal, nothing runs until you decide otherwise, wherever you are.
How to manage it
The button below opens the preferences window whenever you want, and so does the cookie link in the footer of every page. Switching measurement off takes effect at that moment, without reloading the page. You can also clear cookies and local storage for this site from your browser settings; the only effect is that the notice appears again on your next visit.
Changes
If what this site stores changes, this page changes first. The date at the top tells you when the last revision happened.
Contact
Questions about this policy: pigment@hongda-chem.com · +86 574 87907888