Privacy Policy

This Privacy Policy explains how LIMESTONE (HK) LIMITED, a business registered in Hong Kong and operating the store at www.tstsyslab.com, collects, uses, shares, and manages personal information in connection with the website and store.

This Policy should be read together with any privacy choices or notices shown on the website.

1. Information We Collect

Depending on how you use the website, we may collect the following categories of information.

Account Information

If you create an account, we may collect information such as your name, email address, account credentials, account preferences, and information associated with your customer account.

Order and Transaction Information

When you place or attempt to place an order, we may collect information such as:

• your name;

• email address;

• telephone number where provided or required;

• billing address;

• delivery address;

• products ordered;

• products, quantities and any product specifications selected;

• order value;

• payment status;

• order history; and

• transaction-related records.

We accept Visa and Mastercard. Payment-card information is processed through the payment services used at checkout.

2. Customer-Service Communications

If you contact us, we may collect the information contained in your communication, including your email address, order number, inquiry details, attachments you choose to provide, and our correspondence with you.

Where an order problem is being reviewed, you may choose to provide photographs or other relevant supporting information.

3. Device, Website, Cookie, and Tracking Information

When you use www.tstsyslab.com, the website and its technical services may collect information such as:

• IP address;

• browser type and version;

• device type;

• operating-system information;

• pages viewed;

• approximate time of visits;

• referring pages;

• website interactions;

• account or session identifiers;

• cookie identifiers; and

• advertising or measurement identifiers where applicable.

The store uses WooCommerce to provide shopping and checkout functions.

4. How We Use Personal Information

We may use personal information for the following purposes.

Account Administration

We may use account information to create and maintain customer accounts, support sign-in, manage account settings, and provide account-related functions.

Orders and Payments

We may use order, billing, and transaction information to process purchases, verify transactions, maintain transaction records, address payment issues, process eligible refunds, and meet accounting or legal obligations.

Payment information may be processed by the payment services used at checkout under their own applicable privacy terms.

Shipping and Delivery

We may use your name, contact information, delivery address, order details, and related information to arrange delivery, respond to delivery problems, and address lost, damaged, leaking, incomplete, or incorrectly delivered orders.

Customer Service

We use customer communications and order information to answer questions, investigate order issues, manage return or refund requests, and provide customer support.

Advertising Measurement and Remarketing

Where permitted by applicable law and, where required, after valid consent has been obtained, advertising-tracking technologies may be used to measure advertising performance, understand interactions with advertising, create relevant audiences, or show advertising to previous website visitors.

Security and Website Administration

We may use technical and account information to protect the website, detect suspicious activity, prevent unauthorized access, diagnose technical problems, and maintain site security.

Legal and Regulatory Purposes

We may process information where reasonably necessary to meet applicable legal obligations, maintain required records, establish or defend legal claims, or respond to lawful requests from competent authorities.

5. Legal Basis and Consent

The legal basis for processing personal information depends on the individual, location, purpose of processing, and applicable law.

Depending on applicable law, processing may be based on steps requested before a transaction, performance of a transaction, compliance with legal obligations, legitimate interests recognized by law, or consent.

Where applicable law requires consent for non-essential cookies or advertising tracking, those technologies should not be activated until valid consent has been obtained.

Where the law gives you the right to refuse or withdraw consent for non-essential tracking, the website should provide a practical method for doing so.

Continuing to browse the website will not be treated as a substitute for affirmative consent where applicable law requires such consent.

6. Necessary Cookies and Similar Technologies

The website may use cookies or similar technologies that are reasonably necessary for functions such as:

• maintaining a shopping cart;

• account sign-in;

• account security;

• remembering session information;

• checkout functions; and

• essential website operation.

Where applicable law permits necessary technologies without consent, they may operate on that basis.

7. Advertising and Other Non-Essential Tracking

Advertising and other non-essential tracking technologies are treated separately from technologies required for basic website operation.

Where prior consent is required, LIMESTONE (HK) LIMITED should obtain that consent before activating the relevant tracking.

Users must be able to refuse or withdraw non-essential tracking consent where applicable law provides that right. Withdrawal should be as easy as giving consent where required by applicable law.

The actual consent controls and technology configuration used on www.tstsyslab.com must match this Policy.

8. Email Communications

We use Hostinger for email services. Email addresses and message contents may be processed through this service to send and receive communications.

Transactional or service-related messages may be used where needed for account, order, security, customer-service, or similar operational purposes.

Marketing-email subscriptions, where offered, should be voluntary. Where you subscribe to marketing communications, you may unsubscribe using the unsubscribe method included with those communications or by contacting Support@tstsyslab.com, subject to applicable law.

9. How We Share Personal Information

We may share personal information with third parties where reasonably necessary for legitimate store operations, including relevant:

• website and hosting services;

• WooCommerce-related technical services;

• the payment services used at checkout;

• delivery-related services;

• Hostinger email services;

• professional advisers where necessary;

• fraud-prevention or security services where used; and

• public authorities where disclosure is legally required.

10. International and Cross-Border Processing

LIMESTONE (HK) LIMITED is based in Hong Kong, while customers, website infrastructure, service providers, and technical systems may be located in other jurisdictions.

As a result, personal information may be processed outside the country or region where a customer is located.

Where applicable law requires safeguards or other measures for an international transfer, LIMESTONE (HK) LIMITED and the relevant service providers should use the measures required by that law.

11. Data Retention

Our standard retention period for personal information is six months after the relevant enquiry or transaction has been completed, or after account closure for account information.

We retain information for longer where necessary to comply with legal or accounting record-keeping obligations, resolve an outstanding dispute, prevent fraud, or establish or defend legal claims. Records subject to such requirements are retained for the applicable required period.

When information is no longer required for these purposes, we delete or anonymise it.

12. Data Security

We use reasonable organizational and technical measures appropriate to the nature of the information and the operation of the store.

However, no internet transmission, website, database, or electronic storage method can be guaranteed to be completely secure.

Customers should use appropriate care when choosing passwords and protecting account credentials.

13. Your Privacy Rights

Depending on the law applicable to you, you may have rights concerning your personal information, including rights to:

• request access to personal information;

• request correction of inaccurate information;

• request deletion in circumstances provided by law;

• object to or restrict certain processing where applicable;

• withdraw consent where processing is based on consent;

• obtain certain information in a portable form where applicable; and

• make a complaint to an appropriate data-protection or privacy authority.

These rights may be subject to lawful conditions, exceptions, identity-verification requirements, and record-retention obligations.

To make a privacy request, contact Support@tstsyslab.com.

We may request information reasonably necessary to verify the request and protect personal information from unauthorized disclosure.

14. Marketing Choices

Where marketing email is offered, subscription should be voluntary.

You may use the unsubscribe function provided in the relevant marketing message or contact Support@tstsyslab.com to make an applicable request.

Unsubscribing from marketing communications does not necessarily prevent service communications that are reasonably necessary for an order, account, security matter, or customer-service request.

15. Third-Party Websites

The website may contain links or embedded material associated with third parties.

Those third parties may apply their own privacy practices. You should review their privacy information where relevant.

16. Changes to This Privacy Policy

We may update this Privacy Policy as our website, service providers, data practices, or legal obligations change.

The current version of this Policy is available on www.tstsyslab.com.

17. Contact Us

For questions, privacy requests, or privacy-related complaints, contact:

LIMESTONE (HK) LIMITED
ROOM D5, 5/F, KING YIP FACTORY BUILDING, 59 KING YIP STREET, KWUN TONG, KOWLOON, HONG KONG
Email: Support@tstsyslab.com

Wholesale Enquiry Information

For wholesale enquiries, we may collect the product names or SKUs, requested quantities, delivery country and postal code, company name where provided, and related correspondence. We use this information to respond to your enquiry, check availability and prepare or discuss a quotation. An enquiry does not automatically enrol you in marketing communications.