About the use of cookies on this website Cookie & Data Collection
Sichuan Dachanghui Technology Co., Ltd. (DCH) · Updated: 2026 Aug 18
Cookie Policy
Last updated: August 18, 2026 | Effective: August 18, 2026
A Cookie is a small text file stored by a web server on your browser or device. This Website uses Cookies and similar technologies to ensure basic functions work properly, improve your browsing experience, and perform access statistics analysis after obtaining your consent.
We classify Cookies into three categories: Necessary Cookies (always enabled, no additional consent required from you), Analytics Data and Marketing Data (both enabled only after you click "Accept All"). You can manage or delete Cookies through your browser settings; for instructions, please refer to your browser's help documentation. For the full Privacy Policy, please see the Privacy Policy.
Always On Necessary Cookies
The following Cookies are indispensable for maintaining the basic functions and secure operation of the website. They are automatically enabled when you visit this Website, without requiring additional consent.
| Name | Purpose | Duration | Type |
|---|---|---|---|
| PHPSESSID | Used to identify the user's login session state and ensure the normal operation of back-end management functions. | Session end | HTTP Cookie |
| cookie_consent | Records your choice on Cookies and privacy (Accept All / Necessary Only) to avoid repeated pop-up notifications. | 180 days | HTTP Cookie |
| privacy_version_id | Records the version number of the Privacy Policy you have read and agreed to; prompts you to re-confirm when the version is updated. | 180 days | HTTP Cookie |
| csrf_token_* | Cross-site request forgery (CSRF) token that protects submission operations such as the contact form from malicious use. | 2 hours | HTTP Cookie |
| Security operation log (cms_visit_security) |
Basic access records retained pursuant to Article 21 of the Cybersecurity Law (IP address, access path, browser identifier, access time), used only for cyberattack defense and troubleshooting, not for user profiling or behavioral analysis. This is a server-side record and does not rely on Cookies. | ≥ 6 months | Server-side database |
Requires Consent Analytics Data
The following data is enabled only after you click the "Accept All" button. It helps us understand website traffic to optimize service quality. You may decline at any time.
| Name | Purpose | Duration | Type |
|---|---|---|---|
| Access statistics records (cms_visits) |
Access statistics recorded after your authorization, including IP region (anonymized), page path, dwell time, access source, browser language, device type and bot/risk score. Used to generate visitor trend reports and optimize website content. This is a server-side record and does not use tracking Cookies. | ≤ 180 days | Server-side database |
| Privacy consent records (cms_privacy_consents) |
Records the time, source page and consent level (accepted / declined) of your privacy choice, as a compliance audit credential. | Retained long-term | Server-side database |
Requires Consent Marketing Data
Used to record the marketing campaigns you participated in and your preference for receiving promotions; enabled only after you click "Accept All", all owned by our company and not shared with third parties.
| Name | Purpose | Duration | Type |
|---|---|---|---|
| Marketing preference (marketing_pref) |
Records the marketing campaigns you participated in and your promotion-claim status; enabled only after authorization, used to show you relevant campaign information, not shared with third parties. | 180 days | Server-side database |
🛡️ Important note: This Website does not use any third-party tracking Cookies or analytics service code (such as Baidu Analytics, Google Analytics, Baidu Shangqiao, etc.). All data is directly collected and stored by our own systems, and we will not share your personally identifiable information with third parties.
If you wish to change your previous Cookie choice, you may clear the Cookies in your browser and revisit this Website, or disable Cookies in your browser settings. Please note that disabling necessary Cookies may affect the use of some basic functions.
Relationship Between This Policy and the Privacy Policy
This Policy is a specific explanation of the Privacy Policy regarding Cookies and similar technologies. For how we collect, use, store and protect your personal information, as well as the rights you are entitled to, the Privacy Policy (see the "Privacy Policy" page of this Website) shall prevail. If you have any questions about Cookie processing, or wish to exercise personal information rights such as access and deletion, please submit through the "Contact Us" page of this Website by selecting "Personal Information Protection Request" in "Request Type".
Dachenghui AI Assistant
Privacy Policy v2.6
1. Notice
Sichuan Dachanghui Technology Co., Ltd. (hereinafter referred to as "we", "Dachanghui" or "DCH"; Unified Social Credit Code: 915101070643303322) attaches great importance to the protection of your personal information. This Policy is formulated in accordance with the Personal Information Protection Law, the Cybersecurity Law and the Data Security Law of the People's Republic of China and other applicable laws and regulations, and explains how we collect, use, store, share and protect your personal information, as well as the rights you are entitled to.
This Policy applies to the processing of personal information that occurs when you interact with us through the Dachanghui official website (www.scdch.com and its subpages), contact forms, online consultation, telephone or offline business communications. Please read and understand this Policy carefully before using our services.
If you have any questions about our processing of personal information, you may contact us through the channels set out in "11. How to Contact Us" of this Policy.
2. How We Collect and Use Your Personal Information
(1) How we collect your personal information
We only collect personal information to the extent necessary to provide you with services, mainly from the following sources:
1. Information you provide actively
- Business consultation and contact: when you contact us through the "Contact Us" form, online customer service, telephone or email, you may provide your name, contact telephone number, email address, company name, business type and consultation content;
- Subscription: when you subscribe to newsletters or solution materials we send, the email address you provide;
- Offline business communication: contact persons, titles, project requirements and other information provided by you or your authorized representative in scenarios such as solution negotiation and project implementation.
2. Information automatically obtained during your use of the website
- Device and network information: browser type, operating system, screen resolution, access time, IP address, referrer page and other access logs;
- Cookies and similar technologies: please refer to the Cookie Policy of this website; we only enable statistics cookies after your authorization.
3. We will not obtain your personal information from illegal channels
We do not purchase, accept or otherwise illegally obtain your personal information from third parties. Except for the scenarios described in this Policy, we will not collect your sensitive personal information (such as ID numbers, biometric data, health information, etc.); if the collection of such information is indeed necessary for specific business, we will separately obtain your explicit consent.
(2) How we use your personal information
Based on a lawful basis such as "necessary to provide you with services", "performance of legal obligations" or "obtaining your consent", we use the collected personal information for the following purposes:
- Responding to your inquiries, registering your needs, and contacting you;
- Matching you with appropriate solutions, preparing solution materials and arranging business follow-up;
- Performing contractual obligations and providing implementation and O&M services after you establish cooperation with us;
- Sending you product, solution and event information related to your interested business (if you have agreed to receive marketing information);
- Conducting internal access analysis and service quality improvement;
- Ensuring the security of the website and systems and preventing fraud, abuse and cyberattacks;
- Other processing required to comply with laws, regulations and regulatory requirements.
(3) Personal information collection list (retention list)
| Information Item | Collection Scenario | Processing Purpose | Retention Period |
|---|---|---|---|
| Name, contact phone, company name, business type, consultation content | Contact form / online customer service / telephone consultation | Respond to inquiries, business follow-up, solution matching | 2 years after the consultation is closed, or deleted earlier upon your request |
| Email address | Newsletter / material subscription | Sending solution and event information you follow | Sending stops immediately upon unsubscription, data retained no more than 6 months |
| Access logs (IP, time, device, referrer) | Website access | Security risk control, access statistics and troubleshooting | No less than 6 months (per the network log retention requirement of the Cybersecurity Law) |
| Cookie-related identifiers | Website usage (after authorization) | Essential functions and access analysis | Per the retention period of each Cookie category (see Cookie Policy) |
3. How We Use Cookies and Similar Technologies
To improve browsing experience, analyze website usage and ensure basic functions, we use Cookies and similar technologies (such as local storage, pixel tags) after your authorization. We classify Cookies into "Necessary / Statistics / Preference" categories, and you may adjust your authorization at any time through "Cookie Settings" in the footer.
The detailed categories, purposes and retention periods of Cookies are set out in the Cookie Policy of this website (published together with this Policy).
4. How We Entrust Processing, Share, Transfer and Publicly Disclose Your Personal Information
(1) Entrusted processing
To provide services more efficiently, we may entrust qualified third parties with appropriate security capabilities to process part of your personal information, for example: domestic cloud server and bandwidth service providers (for storage and hosting, data stored within China), email and SMS service providers (for sending notifications), and online customer service and ticketing system vendors. We sign data processing agreements with the entrustees, requiring them to process only within the agreed purposes and scope and to adopt protective measures no less stringent than the standards of this Policy.
(2) Sharing
We will not sell your personal information for profit. We may share your personal information only in the following circumstances:
- With your separate consent;
- Based on laws and regulations, or mandatory requirements of judicial or administrative authorities;
- If this company has affiliated companies, necessary information is shared under the minimization principle for the purpose of unified customer service and risk control;
- Information necessary for performance of the contract with you is shared with entrusted implementation, logistics or technical partners (such as contacts, project address), with a confidentiality requirement imposed on them.
(3) Transfer
In the event of merger, division, acquisition or bankruptcy liquidation involving the transfer of personal information, we will inform you of the name and contact information of the recipient and require it to continue to be bound by this Policy; if the purpose of processing changes, we will re-obtain your consent.
(4) Public disclosure
We will publicly disclose your personal information only in the following circumstances: with your separate consent, or in accordance with laws and regulations or requirements of regulatory authorities.
5. How We Protect Your Personal Information
- Adopt technical and managerial measures such as encrypted transmission (HTTPS), access control and operation audit to protect your information;
- Follow the minimization principle and only process information necessary to achieve the purpose;
- Provide compliance training to employees who may access personal information and require them to assume confidentiality obligations;
- Establish a security incident emergency response mechanism, and promptly inform you and the regulatory authority in accordance with the law when risks such as leakage occur;
- Regularly assess the security capabilities of partners and prudently select service providers.
6. Your Rights
You have the following rights regarding the processing of your personal information, which you may exercise through the channels in "11. How to Contact Us" of this Policy:
- Access and copy your personal information;
- Correct inaccurate or incomplete personal information;
- Delete your personal information under statutory circumstances;
- Withdraw the consent you previously gave (withdrawal does not affect the validity of processing already carried out before the withdrawal);
- Request us to explain this Policy.
After verifying your identity, we will respond to your request within the time limit prescribed by laws and regulations (within 15 days from the date of receipt and identity verification of the request). For security and anti-impersonation reasons, we may require you to provide necessary identity information to verify the authenticity of the request.
If you have any questions or complaints about our processing of personal information, you may also report to the regulatory authority such as the cyberspace administration at our domicile.
7. Protection of Minors
We attach importance to the protection of minors. This website is mainly aimed at enterprise customers and adult professionals; we do not actively collect personal information of minors under the age of 14. If you are a minor, please use this website accompanied by a guardian; if we find that we have mistakenly collected personal information of a minor, we will delete it as soon as possible.
8. Storage Location and Retention Period
We store your personal information within the territory of the People's Republic of China and will not transmit or provide your personal information to overseas destinations. We retain your personal information only for the shortest period necessary to achieve the purposes described in this Policy; the retention period is detailed in the "Personal Information Collection List" under "2. How We Collect and Use Your Personal Information"; upon expiry of the retention period or at your request for deletion, we will delete or anonymize it, unless otherwise provided by laws and regulations.
9. Third-Party Links and External Services
This website may contain links to third-party websites or services (such as maps, payment, partner platforms). Such third parties have their own privacy policies, and we are not responsible for their privacy practices. Please pay attention to the relevant parties' privacy terms before leaving this website.
10. How This Policy Is Updated
We may revise this Policy from time to time according to changes in laws and regulations or business adjustments. The revised version will be published on this page and the "update date" will be updated; for material changes, we will prompt you to re-read and confirm through a prominent means (such as a pop-up or website announcement). Your continued use of this Website constitutes acceptance of the updated Policy.
11. How to Contact Us
- Entity name: Sichuan Dachanghui Technology Co., Ltd. (Dachanghui DCH)
- Unified Social Credit Code: 915101070643303322
- Registered address (business registration domicile): No. 1-26 Qixia Road, Wuhou District, Chengdu, Sichuan Province
- Office address (daily contact and visits): Room 1014, Unit 1, Building 2, Shangding International, No. 27 South Renmin Road Section 4, Wuhou District, Chengdu, Sichuan Province
- Contact telephone: 028-85243056 (Monday to Saturday 9:00–17:00)
- Contact: To exercise personal information related rights, please visit the "Contact Us" page of this Website, select "Personal Information Protection Request" in "Request Type" and submit: 🔗 Link (please attach necessary identity information for verification; we will process it in a timely manner in accordance with the law).
Note: The registered address is the business registration domicile; for written materials delivery and on-site visits, please use the aforementioned office address.
12. Terminology
- Personal information: various kinds of information recorded in electronic or other form relating to identified or identifiable natural persons (excluding information after anonymization).
- Sensitive personal information: personal information that, once leaked or illegally used, is likely to result in harm to the personal dignity or personal or property safety of a natural person, such as biometric, religious, medical and health, financial account information, etc.
- Entrusted processing: a personal information processor entrusts a third party to process personal information in accordance with the agreed purposes, methods, etc.
- Anonymization: the process of technically processing personal information so that the subject of personal information cannot be identified and the processed information cannot be restored.
This website uses cookies and similar technologies to store necessary information for normal operation. With your consent, we also use these methods to collect aggregated statistics about visits and usage of this website, so that we can analyze and improve our services. By accepting all cookies, you agree to our use of cookies in this way. You can manage your options at any time by clicking "Cookie Settings" in the footer.Cookies and Privacy Policy。
Cookie Settings
Description of cookies and data collection used by this site
Cookies essential for the basic functionality and secure operation of the website. They are activated automatically when you visit and require no additional consent.
| Name | Purpose | Duration |
|---|---|---|
| PHPSESSID | Identifies the login session to ensure the admin panel functions correctly. | Session |
| cookie_consent | Records your cookie and privacy choices (Accept All / Necessary Only) to avoid repeated pop-ups. | 180 days |
| privacy_version_id | Records the privacy policy version you have agreed to; prompts re-confirmation when the version is updated. | 180 days |
| csrf_token_* | Cross-site request forgery (CSRF) protection token that safeguards form submissions. | 2 hours |
| Security Operation Log | Basic access records (IP, path, UA, time) retained in accordance with the Cybersecurity Law, used only for attack defense and troubleshooting; no profiling. | ≥ 6 months |
After your authorization, anonymized visit statistics are collected to generate visitor trend reports and improve our services.
| Name | Purpose | Duration |
|---|---|---|
| Visit Statistics Record | Records visit statistics (anonymized location, path, duration, source, language, device) after authorization to generate visitor trend reports. | 180 days |
| Privacy Consent Record | Records the time, source and consent level (accepted / declined) of your choice as a compliance audit record. | Long-term |
Used to record your participation in marketing activities and preferences for offers. Only enabled after you click "Accept All".
| Name | Purpose | Duration |
|---|---|---|
| Marketing Preference | Records your participation in marketing activities and offer status; only enabled after authorization to show relevant information. | 180 days |
How we collect and use information: We collect only what is necessary for the business function, including inquiry information you submit (name, phone, email, company, needs) and anonymized visit statistics collected after your authorization.
Your rights: You have the right to access, copy, correct, and delete your personal data, and to withdraw consent at any time. Learn more via the "Privacy Policy" in the footer, or contact us to exercise your rights.
Data storage & protection: We protect your data with access control, transport encryption, and log auditing. Analytics data is automatically purged within 180 days; security logs are retained for at least 6 months as required by law.
This website does not use any third-party tracking cookies or analytics codes (e.g., Baidu Analytics, Google Analytics). All data is collected and stored by our own systems.