Privacy Policy

Last updated: [January,2026]

This Privacy Policy explains how Jiangmen Sanjun Battery Co., Ltd. (“TSJ Sanjun Battery”, “we”, “us”, or “our”) collects, uses and protects personal data when you visit our website and landing pages, including tsjbattery.com and any Google Ads landing pages we operate (collectively, the “Site”).

We manufacture and supply cylindrical rechargeable battery cells and custom battery packs for business customers only. This Policy is primarily intended for business visitors and contacts from the EU/EEA, the UK and other regions.

1. Who We Are

Company name: Jiangmen Sanjun Battery Co., Ltd. (TSJ Sanjun Battery)

Website: https://www.tsjbattery.com

Business nature: Manufacturer of cylindrical rechargeable cells (NiCd, NCM Li-ion, LiFePO4) and custom battery packs for industrial and OEM applications.

Registered address: 联合猪斗围工业区2栋二、三楼, 环市街道, 蓬江区, 江门市, 广东省, 中国 (Jiangmen, Guangdong, China)

Contact email: sales@batterytsj.com

Contact phone: +86-750-3660663

2. Scope of this Privacy Policy

This Privacy Policy applies when you:

Visit or browse our Site;
Click our Google Ads and land on a dedicated landing page;
Submit a contact form or “Request a Quote” form;
Communicate with us by email or telephone using the contact details provided on the Site;
Interact with embedded content such as YouTube videos on our pages.

This Policy does not govern the detailed terms of any purchase contracts, supply agreements or OEM/ODM agreements we may sign with you. Those relationships will be regulated by separate written contracts.

3. Personal Data We Collect

We may collect the following categories of personal data when you use our Site:

3.1 Information you provide directly

Contact details: name, business email address, phone number, job title, company name, country/region.
Business information: product requirements, project details, application fields, expected volume, technical questions or comments that you provide in a form or email.
Communication content: messages you send to us, including emails and form submissions, and our replies.

3.2 Information collected automatically

When you access the Site, certain data is collected automatically, primarily through cookies and similar technologies:

Usage data: IP address, browser type and version, device type, operating system, language settings, referring URLs, pages visited, time and date of visits, and other diagnostic data.
Analytics data: aggregated statistics about how visitors interact with our pages, generated via Google Analytics / GA4.

3.3 Information from advertising and marketing tools

Google Ads data: information about how you arrived at our Site (for example, which ad or keyword you clicked), basic conversion data (such as whether you submitted a form), and related campaign performance data.

3.4 Information from embedded content

When we embed YouTube videos or other third-party content, those providers may collect usage data about your interaction with the embedded content. Such processing is subject to the privacy policy of the relevant third-party provider (e.g. Google/YouTube).

4. How We Use Your Personal Data

We use personal data for the following purposes:

Responding to enquiries: to answer your questions, provide quotations, and follow up on your requests regarding our cells and battery packs.
Business communication: to discuss specifications, technical requirements, sampling, and potential cooperation.
Operating and improving the Site: to monitor usage, troubleshoot technical issues, and optimize the user experience.
Analytics: to understand which pages and campaigns are most effective and to improve our marketing and communication strategies.
Advertising performance measurement: to measure and optimize the performance of our Google Ads campaigns.
Legal and compliance purposes: to comply with applicable laws, regulations and administrative obligations, and to protect our rights, property and safety.

4.1 Legal bases under GDPR (EU/EEA & UK)

Where the EU/EEA or UK data protection laws apply, we process personal data on the following legal bases:

Performance of a contract or steps prior to entering into a contract (Art. 6(1)(b) GDPR): for example, when we process your details to prepare a quotation or discuss technical specifications.
Legitimate interests (Art. 6(1)(f) GDPR): such as operating a secure and effective website, optimizing our marketing, and communicating with business contacts. We carefully balance our interests with your rights and freedoms.
Consent (Art. 6(1)(a) GDPR): for example, where you accept non-essential cookies or opt in to receive marketing communications, if offered.
Legal obligation (Art. 6(1)(c) GDPR): where we need to keep certain records for tax, compliance, or other mandatory purposes.

5. Cookies and Similar Technologies

We use cookies and similar technologies on our Site. Cookies are small text files stored on your device that help us:

Enable basic Site functionality and security;
Understand how visitors use our pages (Google Analytics / GA4);
Measure the performance of our Google Ads campaigns;
Display and operate embedded content such as YouTube videos.

When required by applicable law (for example, in the EU/EEA or UK), we will request your consent for non-essential cookies via a cookie banner or similar consent mechanism before those cookies are stored or accessed.

You can also manage cookies through your browser settings and, where available, through our cookie banner preferences.

6. How We Share Personal Data

We do not sell your personal data. We may share your personal data with:

Service providers: such as website hosting providers, analytics providers (e.g. Google Analytics), and IT support companies that process data on our behalf and under our instructions.
Group or affiliated companies: where necessary to handle your enquiries, provide quotations, or deliver products and services.
Professional advisers: such as lawyers, auditors or consultants, where reasonably necessary for our legitimate business purposes.
Public authorities: when required to comply with applicable laws, regulations, court orders or governmental requests.
Business transfers: in connection with a merger, acquisition, restructuring or sale of all or part of our business, where personal data may be transferred as part of the transaction.

7. International Data Transfers

Our company is based in China, and many of our IT systems and service providers may also be located outside the EU/EEA and the UK. This means that your personal data may be transferred to and processed in countries that may not provide the same level of data protection as your home jurisdiction.

Where we transfer personal data from the EU/EEA or the UK to countries that do not have an adequacy decision from the European Commission or UK authorities, we will implement appropriate safeguards, such as standard contractual clauses (SCCs) or equivalent measures, where required by law.

You can contact us using the details in Section 11 if you would like more information about these safeguards.

8. Data Retention

We keep personal data only for as long as is reasonably necessary for the purposes set out in this Privacy Policy, including to meet any legal, regulatory, tax, accounting or reporting requirements.

In general:

Business contact and enquiry data is retained while we are in active communication with you and for a reasonable period thereafter, usually up to 3–5 years, unless a longer retention period is required by law or justified by our legitimate interests.
Contract-related data may be kept for longer periods in accordance with applicable commercial and tax laws.
Analytics data is typically stored for the periods configured in Google Analytics / GA4, after which it is automatically deleted or anonymised.

When personal data is no longer needed, we will delete or anonymise it in a secure manner.

9. Your Data Protection Rights

Where the GDPR (EU/EEA) or UK GDPR applies, you may have the following rights in relation to your personal data:

Right of access: to obtain confirmation as to whether we process your personal data and to receive a copy of that data.
Right to rectification: to request correction of inaccurate or incomplete personal data.
Right to erasure: to request deletion of your personal data in certain circumstances.
Right to restriction: to request that we limit the processing of your personal data in certain circumstances.
Right to data portability: to receive your personal data in a structured, commonly used and machine-readable format, and to have it transmitted to another controller where technically feasible.
Right to object: to object to processing based on our legitimate interests, on grounds relating to your particular situation.
Right to withdraw consent: where processing is based on your consent, you may withdraw that consent at any time without affecting the lawfulness of processing prior to withdrawal.

To exercise any of these rights, please contact us using the details in Section 11. We may need to verify your identity before responding to your request.

You also have the right to lodge a complaint with your local data protection authority if you believe that we have violated applicable data protection laws. We would, however, appreciate the chance to deal with your concerns before you approach a supervisory authority, so please contact us first.

10. Data Security

We implement appropriate technical and organisational measures to protect personal data against accidental or unlawful destruction, loss, alteration, unauthorised disclosure, or access.

However, no method of transmission over the Internet or method of electronic storage is completely secure. While we strive to use commercially acceptable means to protect your personal data, we cannot guarantee absolute security.

11. Children and Consumer Users

Our Site and services are intended for business users and professional contacts only. We do not knowingly collect personal data from children under the age of 16. If you believe that a child has provided personal data to us, please contact us so that we can delete the information.

We do not market consumer products directly to end users via this Site. If you are an end user of a product that contains our battery cells or packs, please contact the brand or device manufacturer for support.

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time, for example to reflect changes in our practices, technologies, legal requirements or other factors.

When we make changes, we will revise the “Last updated” date at the top of this page. We encourage you to review this Policy regularly to stay informed about how we protect your data.

13. Contact Us

If you have any questions about this Privacy Policy or our data protection practices, please contact us:

Jiangmen Sanjun Battery Co., Ltd. (TSJ Battery)

Email: sales@batterytsj.com

Website: https://www.batterytsj.com & https://tsjbattery.com

Phone: +86-750-3660663

Address: 联合猪斗围工业区2栋二、三楼, 环市街道, 蓬江区, 江门市, 广东省, 中国