Privacy policy

1. Data controller information

• · Operating entity: Anhui Changzhong Brush Industry Co., Ltd.
• · Registered address: Anhui, China
• · Contact phone: +86 19965236428
• · Privacy officer email: privacy@anhui-changzhong.com
• · This policy applies to this website and related custom part services, and does not apply to third-party links or services.

2. Collection and use of personal information

We follow the principle of minimum necessity and only collect personal information essential to providing custom part services:

• · Identity verification information: name, phone number, email address and shipping address provided when you register or place an order — used for account verification, order confirmation, logistics delivery and after-sales communication.
• · Device and access information: device model, operating system, browser type, anonymised IP address, access time and page browsing records — used to optimise site performance, troubleshoot faults and run statistical analysis, and not linked to personal identity.
• · Customization information: machine model, part dimensions, functional requirements and drawings you provide — used solely to match customization solutions, production and quality inspection.
• · Payment information: payments are handled by third-party payment platforms. This website does not collect or store sensitive payment information such as card numbers or passwords, and only receives transaction order numbers for reconciliation.
• · Usage restriction: we do not use personal information for purposes not stated in this policy. If we need to use it beyond the original purpose, we obtain your explicit consent in advance.

3. Storage and protection of personal information

• · Storage location: personal information collected within China is stored on servers located in Mainland China with no cross-border transfer. If cross-border transfer becomes necessary, we complete a security assessment in accordance with regulations and notify you.
• · Storage period: personal information is retained only for the duration of the purposes stated in this policy and any period required by law. After account cancellation, information is irreversibly deleted or anonymised within 30 days.
• · Security measures: sensitive information is stored using AES-256 encryption and payment data transmission uses TLS 1.3. We apply least-privilege access for staff and conduct regular data security training and audits.
• · Breach response: in the event of a personal information security incident we assess the risk level within 72 hours and, where notification is required, inform you by email, SMS or site announcement.

4. Sharing and disclosure of personal information

We do not actively share or transfer your personal information to third parties except:

• · With your explicit consent, we may share necessary information (such as shipping address and customization parameters) with partner manufacturers and logistics providers, under confidentiality obligations and a data processing agreement.
• · Where required by laws, regulations, court orders or administrative supervision, we provide necessary information to competent authorities.
• · In corporate mergers, acquisitions or asset transfers, the transferee is required to continue protecting personal information to standards no lower than this policy, with prior announcement on the website.

5. User rights and how to exercise them

You may exercise the following rights by contacting the privacy officer by email:

• · Right of access: query and download a copy of your personal information.
• · Right of correction: request correction of inaccurate information; we respond with the result within 3 working days.
• · Right to erasure: request deletion of specific personal information where permitted by law.
• · Right to cancellation: account cancellation is supported; after cancellation we stop collecting information and clear data in accordance with regulations.
• · Right to withdraw consent: you may disable authorisation for device information collection or marketing at any time, without affecting services already provided.

6. Third-party services

• · This website may contain third-party links and integrate third-party SDKs. Third parties process your information under their own privacy policies. We use commercially reasonable efforts to require third parties to protect your information but are not liable for their actions. We recommend reviewing their policies.

7. Protection of minors

• · If you are under 18, you must use this website and provide personal information with the consent of a legal guardian. If the guardian does not consent, please stop using the site and notify us. We do not provide personalised marketing to minors and protect minors' information in accordance with law.

8. Policy updates and notifications

• · We may revise this policy in response to business development or legal changes. The updated version is posted on this page with the latest update date. If a revision involves significant changes such as the scope of collection or purpose of use, we notify you by pop-up or email and obtain your consent before the changes take effect.

9. Contact us

• · For any questions, complaints or suggestions regarding this policy, contact our privacy officer at privacy@anhui-changzhong.com — we respond within 15 working days.