Cookies
Cookies
Effective Date：2026-09-15 Update Date: 2026-11-02
This Cookie Policy explains how Sieyuan Electric Co., Ltd. ("we," "us," "our," or "Sieyuan Electric") uses cookies and similar tracking technologies when you visit en.sieyuan.com (the "Site"). It explains what these technologies are, why we use them, and how you can control them. This Policy should be read together with our Privacy Policy, which explains how we collect, use, and disclose personal information more generally.
1. What Are Cookies and Similar Technologies?
Cookies are small text files that a website places on your computer or mobile device through your browser. They are widely used to make websites work, remember your preferences, and provide reporting information to the website operator.
Cookies set by the website you are visiting are called "first-party cookies." Cookies set by a domain other than the one you are visiting are called "third-party cookies." Similar technologies, such as browser local storage, serve comparable purposes and are covered by this Policy.
2. Why We Use Cookies
We use cookies to: operate the Site securely and reliably; remember your preferences, such as your selected language; understand how visitors use the Site so that we can improve it; and measure and improve the performance of our marketing activities.
3. Categories of Cookies We Use
3.1 Strictly Necessary Cookies
These cookies are essential for the Site to function, including maintaining your session as you browse and supporting basic security. The Site cannot function properly without them.
3.2 Functional Cookies
These cookies allow the Site to remember choices you make, such as your selected language, to provide a more consistent experience on return visits.
3.3 Performance and Analytics Cookies
These cookies help us understand how the Site is used in aggregate — which pages are visited and how visitors arrive — so that we can improve it. We use Google Analytics (GA4) for this purpose.
3.4 Advertising Cookies
These cookies support the measurement and improvement of our marketing campaigns. We use Google Ads conversion tracking and remarketing (showing our ads to people who have visited the Site when they browse other websites), delivered through Google Tag Manager. We may also use hashed email addresses submitted through our inquiry forms to measure advertising performance, as described in our Privacy Policy.
4. UTM Parameters and Campaign Tracking
Links to the Site from our marketing campaigns (for example, in emails, ads, or social media posts) may include UTM parameters — such as utm_source, utm_medium and utm_campaign — and ad click identifiers, such as the Google Ads click ID (gclid) and the LinkedIn Ads click ID (li_fat_id). Where Analytics and Advertising cookies are allowed (see Section 8), the Site stores these values in first-party cookies for up to 90 days, together with a short history of up to your last 10 visits (date, referring site, source, medium and campaign). If you submit an inquiry form, this information is stored with your inquiry and passed to our customer relationship management (CRM) system, so that we can understand which campaigns lead to inquiries. If you decline, these values are not stored and are not sent with your inquiry.
5. Cookies We Use
| Cookie Name | Provider | Purpose | Category | Duration |
|---|---|---|---|---|
| PHPSESSID | Sieyuan Electric | Maintains your session so the Site functions correctly as you browse | Strictly Necessary | Session |
| web_global_lang | Sieyuan Electric | Remembers your selected site language | Functional | Persistent |
| flowip | Sieyuan Electric | Internal traffic-flow and visitor identification used by the Site | Strictly Necessary | Persistent |
| cookie | Sieyuan Electric | Stores your cookie banner choice (1 = accepted, 2 = declined) | Strictly Necessary | 180 days |
| _ga | Google Analytics | Distinguishes unique visitors by assigning a randomly generated client ID | Analytics | 2 years |
| _ga_M38R6465CC | Google Analytics | Persists session state for our Google Analytics (GA4) property, including campaign attribution | Analytics | 2 years |
| _gcl_aw | Google Ads | Stores the Google Ads click identifier from ad campaign links, for conversion attribution | Advertising | 90 days |
| _gcl_au | Google Ads | Measures ad conversions on the Site (set through Google Tag Manager) | Advertising | 90 days |
| test_cookie | Google (doubleclick.net) | Checks whether your browser accepts cookies, for advertising measurement | Advertising | 15 minutes |
| utm_source, utm_medium, utm_campaign, utm_id, utm_term, utm_content | Sieyuan Electric | Remember which campaign brought you to the Site, so it can be linked to an inquiry you submit | Advertising | 90 days |
| gclid, li_fat_id | Sieyuan Electric | Store the Google Ads or LinkedIn Ads click identifier from the ad you clicked, for conversion attribution | Advertising | 90 days |
| utm_history | Sieyuan Electric | Records up to your last 10 visits (date, referring site, source, medium, campaign), attached to an inquiry if you submit a form | Analytics | 90 days |
| utm_session | Sieyuan Electric | Marks the current visit so that it is recorded only once in utm_history | Analytics | 30 minutes |
| session_id | Sieyuan Electric | Links your visit to an inquiry you submit | Analytics | 30 days |
In addition to the cookies above, Google Ads stores a corresponding click-attribution identifier (_gcl_ls) in your browser's local storage, and Google may set other advertising cookies on the doubleclick.net domain (such as IDE). The Site also keeps the session_id value in your browser's session storage.
6. Third-Party Services
The Site uses Google Tag Manager to deliver Google Analytics (GA4) and Google Ads. Google Tag Manager itself does not set cookies, but loading it sends technical data such as your IP address and browser details to Google. Google LLC processes this data under its own privacy and cookie policy: policies.google.com/technologies/cookies.
7. International Data Transfers
Some of the cookies described in this Policy are provided by Google LLC, which may process and store information on servers located outside your country of residence, including outside China. Where this involves a cross-border transfer of personal information, we rely on the transfer mechanisms made available by our service providers, such as standard contractual clauses, to help ensure your information continues to receive an appropriate level of protection.
8. How to Control Cookies
Cookie consent tool: In the EU/EEA, the UK and Switzerland, a cookie banner lets you accept or decline non-essential (Analytics and Advertising) cookies when you first visit the Site, and these cookies are not used unless you accept. Elsewhere, Analytics and Advertising cookies are used by default and you can switch them off. You can change your choice at any time using the “Your Privacy Choices” link in the Site footer.
Global Privacy Control: If your browser sends a Global Privacy Control (GPC) signal, we treat it as a decision to decline Analytics and Advertising cookies.
Google Ads opt-out: You can manage personalized advertising from Google at Google Ads Settings.
Browser controls: Most browsers let you block or delete cookies through their settings. Disabling cookies may affect some features of the Site.
Industry opt-out tools: You may also opt out of interest-based advertising through the Digital Advertising Alliance or Your Online Choices (EU).
9. Changes to This Policy
We may update this Cookie Policy from time to time to reflect changes to the cookies and technologies we use, or for other operational, legal, or regulatory reasons. Please check this page periodically to stay informed.
10. Contact Us
If you have any questions about this Cookie Policy, please contact us at:
Sieyuan Electric Co., Ltd.
3399 Huaning Road
Email: [email protected]
Website: en.sieyuan.com