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Cookie Policy

What this site stores in your browser, why, how long it stays, and how to change it.

On this page13 sections
  1. In short
  2. 1. Who we are and what this policy covers
  3. 2. What cookies are
  4. 3. Why we use them
  5. 4. The categories we use
  6. 5. The cookies we set
  7. 6. What we store that is not a cookie
  8. 7. Third parties
  9. 8. How to control cookies
  10. 9. What happens to an enquiry (not a cookie)
  11. 10. Changes to this policy
  12. 11. Contact
  13. 12. Terms used in this policy

Last updated: 13 November 2026

In short

  • We set a small number of cookies. They exist so the site remembers your language and your cookie choice, and so the forms stay protected from automated abuse.
  • We do not run advertising, retargeting or cross-site tracking. There is no Google Analytics, no Meta pixel, no advertising network and no social plugin on this site.
  • Our page statistics do not use cookies at all. They are recorded by our own server and are not linked back to you.
  • You can change or withdraw your choice at any time from the Cookie settings link in the footer.

1. Who we are and what this policy covers

zhihuilu.com is published by Weihuan (Shanghai) Technology Co., Ltd. We work for overseas buyers who source from China: finding factories, verifying a supplier before payment, following an order through production and inspection, and arranging interpreting and trade-show support in Shenzhen, Dongguan, Foshan, Guangzhou, Yiwu, Ningbo, Suzhou and Shanghai.

The site is published in nine languages — Chinese, English, German, Arabic, French, Spanish, Portuguese, Japanese and Korean. This policy applies to all of them, and to every page: service pages, city and industrial-belt pages, case studies, guides and the enquiry forms.

This policy covers only cookies and similar technologies. What happens to the information you type into an enquiry form is described separately in section 9.

2. What cookies are

A cookie is a small text file that a website asks your browser to store. It contains a name, a value and an expiry date, and it is sent back to the site on later requests. Cookies cannot run programs, and they cannot read other files on your device.

The law treats other storage technologies the same way when they keep information on your device, so this policy also covers:

  • local storage — data kept by the browser with no expiry date, until you or the site deletes it;
  • session storage — data kept only while a browser tab is open, deleted when the tab closes;
  • tracking pixels — one-pixel images used to record that a page was loaded.

We use the first two. We do not use tracking pixels or advertising identifiers anywhere on this site.

3. Why we use them

Every cookie on this site exists to make one of four things work. None of them is used to build a profile of you across other websites.

To keep the site in the language you chose

The site is a single installation serving nine languages, with Arabic running right-to-left. When you switch language, a cookie records that choice so the next page you open is already in the same language instead of dropping you back to English.

To remember what you decided about cookies

When you press “Accept all”, “Necessary only” or “Save choice”, we store that decision in a cookie and in local storage. Without it, we would have to ask you again on every page, which is worse for you and tells us nothing new.

To keep the site secure and free of automated abuse

Our forms are protected against automated submissions. That protection uses a short-lived security check set by our network provider, plus rate limits on the server. No cookie is needed to submit an enquiry, and we do not use CAPTCHA images or third-party challenge widgets.

To see which pages actually help a buyer

We want to know which service pages, city pages and case studies are read before someone asks for a quotation, and which buttons they press on the way. This is measured by our own server, described in section 6. It does not use cookies, does not follow you to other sites, and does not store your IP address.

4. The categories we use

The categories below follow international guidance and match the switches in our own settings panel. Two are in use as cookies, one measures visits without a cookie, and two we do not use at all.

Strictly necessary

These make the site function and cannot be switched off through our panel. They cover your cookie decision and the security checks that keep the forms free of automated abuse. Because they are strictly necessary, they are set without asking: without them the site could not remember what you chose, and the forms would be open to automated abuse.

Performance

We do not set performance cookies. Page speed, server response time and error rates are measured from our own server logs and from Cloudflare’s aggregated statistics. Nothing is written to your browser to collect this.

Functional

These remember a preference you expressed — in practice your language choice, so the next page does not drop you back to the default. They are not used to identify you.

Analytics

This is the only category you can turn on or off. When it is on, we record page views and clicks on the buttons that lead to an enquiry. When it is off, the site works exactly the same; we simply do not record the visit. The switch controls the measurement described in section 6, which uses no cookie.

Marketing

We do not use marketing cookies. There is no advertising network, no retargeting tag, no social media pixel and no affiliate tracker on this site. We do not sell, rent or share visitor data with advertisers, and we do not run behavioural advertising. If this ever changes, the cookie panel will gain a marketing switch and this policy will be updated before any such cookie is set.

5. The cookies we set

The table lists every cookie you may receive as a visitor. Names are exact, so you can check them in your browser’s developer tools.

Name Set by What it does Category Expires
zhl_ck zhihuilu.com Stores your cookie choice — accepted, necessary only, or analytics off — together with the time you made it. Strictly necessary 12 months
pll_language zhihuilu.com Records the language you selected, so the next page loads in the same language. One of nine values, for example en or ar. Functional 12 months
__cf_bm Cloudflare Distinguishes a real browser from an automated one, so the enquiry forms and the site itself stay available under load. Contains no information about you beyond what any web request carries. Strictly necessary 30 minutes
cf_clearance Cloudflare Remembers that your browser already passed a security check, so you are not challenged on every page. Strictly necessary Up to 30 minutes

Three further cookies exist only for our own staff. wordpress_logged_in_[hash] and wp-settings-[id] are set when an editor signs in to the site’s admin area; they keep that session open and remember the admin screen layout. wordpress_test_cookie checks that the browser accepts cookies during that sign-in. A normal visitor never receives any of the three.

Our forms also carry a one-time security token and the address of the page you came from. Both are form fields, not cookies, and neither is stored on your device.

6. What we store that is not a cookie

Four items are kept in your browser without being cookies. We list them for the same reason we list the cookies: you should be able to see and delete them.

Key Where What it holds Expires
zhl_ck_v1 Local storage A second copy of your cookie choice, so the banner does not reappear if the cookie is cleared but local storage survives. Until you clear it
ctcAskaiHist Local storage The conversation you had with the AI assistant, kept on your device so the thread survives a page reload. It is not shared with anyone else; the messages you send are processed on our server to produce an answer. Until you clear it, or press “New chat”
zhlr_s Session storage A random eight-character number that groups the page views and clicks of one visit. It is not derived from your device, is not written to a cookie, and is discarded when the tab closes. When the tab closes
ctcAskaiCtaN, ctcAskaiCtaOff Session storage Counts how often the assistant prompt has been shown and whether you dismissed it, so it is not repeated in the same visit. When the tab closes

How our statistics work. Page views and clicks are sent to our own server at the moment they happen. The record holds the page address, the language, the event type and the random number above — nothing else. It does not contain your IP address, your browser, your device, or any identifier that could be matched to you later. Because no cookie is involved and no identifier is stored, this measurement cannot follow you to another website, and it is not shared with anyone.

7. Third parties

Two kinds of third party are involved in serving this site. Neither receives information for advertising.

Cloudflare provides the content delivery network and the security layer in front of the site. It sets the two security cookies listed above and processes requests on our behalf. Cloudflare’s own privacy notice explains how it handles that data.

Image providers. Some photographs on our city and service pages are delivered from Pexels and Shopify Burst image networks. When such an image loads, that provider receives the usual request information — IP address, browser type, the page the image appears on — as any image host would. These providers set no cookies for us and receive no enquiry data.

Beyond these, we embed no third-party content: no video players, no map widgets, no chat widgets, no social share buttons, no fonts loaded from an external font service. Our typefaces, scripts and styles are served from this domain.

The AI assistant in the corner of the page is ours. Your question is sent to an endpoint on this domain and answered there. A third-party model provider may process the text of your question to generate the answer, but no chat widget, cookie or identifier from that provider is placed in your browser. Please do not type confidential documents, prices you have not agreed to share, or personal details of other people into it.

8. How to control cookies

Through this site

The Cookie settings link in the footer of every page reopens the panel. There you can accept everything, keep only what is necessary, or switch analytics on and off on its own. Your choice takes effect immediately and lasts twelve months, after which we ask again.

Withdrawing consent is as easy as giving it: the same link, the same number of clicks. If you choose “Necessary only”, the site keeps working — the language selector, the enquiry forms, the AI assistant and all content remain available. What stops is the recording of page views and clicks.

Through your browser

Every browser lets you see, block and delete cookies. The settings are usually under Privacy or Security:

  • Chrome — Settings › Privacy and security › Third-party cookies, and “See all site data and permissions” to delete individual entries.
  • Safari — Settings › Privacy › Manage Website Data. On iOS: Settings › Safari › Advanced › Website Data.
  • Firefox — Settings › Privacy & Security › Cookies and Site Data › Manage Data.
  • Edge — Settings › Cookies and site permissions › Manage and delete cookies and site data.

If you block all cookies, the site still loads. You will be asked about cookies on each visit, and your language choice may reset when you move between pages. Nothing else changes, because no part of this site depends on a cookie to show content.

Do Not Track and Global Privacy Control

We do not track you across other websites, so there is nothing for these signals to switch off. Whether your browser sends them or not, our behaviour is the same: no advertising cookies, no cross-site profiling. What governs analytics here is the switch in our own panel, which records your explicit choice rather than inferring it from a browser header.

9. What happens to an enquiry (not a cookie)

This section is here because the question usually follows the cookie question.

When you submit an enquiry, we receive the name, email address, company, city, service, product and message you typed, the language you used, and the page you sent it from. We use this to answer you and to prepare a quotation. It is kept in our own enquiry system, is not sold, and is not added to a mailing list unless you ask to be.

Two safeguards touch your data briefly. To stop automated submissions, the server keeps a one-way hash of your IP address for ten minutes and then deletes it; the address itself is not stored. A repeat submission of the same email within two minutes is treated as a double click and merged into one enquiry.

You can ask us to correct or delete an enquiry at any time by writing to the address in section 11. We answer within 24 hours on working days.

10. Changes to this policy

We review this policy when the site changes in a way that affects it — a new analytics tool, a new embedded service, a change in how the enquiry forms work. The date at the top of the page always shows the current version.

If a change adds a cookie in a category you have not agreed to, we will ask for your choice again before that cookie is set. We will not treat your earlier acceptance as covering something new.

If you need the version that applied when you made your choice, write to us and we will send it.

11. Contact

Questions about this policy, a request to see or delete what we hold about you, or a complaint about how we handled it:

  • Weihuan (Shanghai) Technology Co., Ltd.
  • Email: [email protected]
  • Phone: +86 132 6281 5550
  • Post: Shanghai, China — full address supplied on request

We reply within 24 hours on working days. If you are writing about a specific enquiry, quoting the email address you used will help us find it faster.

12. Terms used in this policy

Term Meaning
Cookie A small text file stored by your browser at a website’s request, sent back on later requests to that site.
First-party cookie A cookie set by the site you are visiting — here, by zhihuilu.com.
Third-party cookie A cookie set by a different domain whose service is embedded in the page.
Session cookie A cookie that is deleted when you close the browser or the tab.
Persistent cookie A cookie that stays on your device until its expiry date or until you delete it.
Local storage Browser storage with no automatic expiry, readable only by the site that wrote it.
Session storage Browser storage that is cleared when the tab closes.
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