Privacy Notice

Last Updated: August 24, 2026

Thank you for visiting Havllisan. Havllisan is operated by Hong Kong Gastech Engineering Limited.

We value your trust and are committed to handling your personal information responsibly. This Privacy Policy explains how we collect, use, disclose, store, and protect your personal information when you visit our website, use our services, communicate with us, or place an order.

By using our website or services, you acknowledge the practices described in this Privacy Policy.

Personal Information We Collect

The personal information we collect depends on how you interact with Havllisan.

Information You Provide Directly

We may collect information when you:

  • Visit or browse our website

  • Create an account

  • Place or attempt to place an order

  • Subscribe to emails, newsletters, or promotional messages

  • Contact our customer support team

  • Submit a review, survey response, or other content

  • Participate in a promotion or giveaway

  • Request a return, refund, exchange, or order change

This information may include:

  • Name

  • Email address

  • Phone number

  • Billing address

  • Shipping address

  • Account credentials

  • Order and transaction history

  • Product preferences

  • Customer-support communications

  • Reviews, feedback, or other information you provide

Payment information is generally processed by our payment providers. Havllisan may receive limited transaction details but does not typically receive or store complete payment-card numbers.

Information Collected Automatically

When you use our website, we and our service providers may automatically collect information such as:

  • IP address

  • Browser and device type

  • Operating system

  • Referring website

  • Pages viewed

  • Products viewed or added to your cart

  • Links clicked

  • Date and time of visits

  • Approximate location

  • Cookie identifiers

  • Shopping and checkout activity

  • Interactions with our advertisements and emails

We collect this information through cookies, pixels, tags, log files, analytics tools, and similar technologies.

Information Received from Other Sources

We may receive information from third parties that help operate our store, including:

  • Shopify

  • Payment processors

  • Shipping and fulfillment providers

  • Marketing and advertising platforms

  • Analytics providers

  • Fraud-prevention services

  • Customer-service applications

  • Social media platforms

How We Use Your Information

We may use personal information to:

  • Process, verify, fulfill, and deliver orders

  • Provide order confirmations and shipping updates

  • Manage payments, refunds, returns, and exchanges

  • Respond to customer-service requests

  • Maintain customer accounts

  • Improve our website, products, and services

  • Personalize your shopping experience

  • Recommend products that may interest you

  • Send promotional emails or messages when permitted

  • Measure website and advertising performance

  • Detect and prevent fraud, misuse, and security threats

  • Protect our customers, business, and legal rights

  • Maintain business and transaction records

  • Comply with legal, tax, regulatory, and contractual obligations

Shopify and Store Operations

Our online store is hosted by Shopify, which provides the e-commerce platform that allows us to sell our products and services.

Shopify may collect and process personal information when you visit our store, create an account, or complete a purchase. Shopify processes this information according to its own privacy practices.

You can learn more by reviewing the Shopify Consumer Privacy Policy:

https://privacy.shopify.com/

Cookies and Tracking Technologies

Havllisan and our service providers may use cookies and similar technologies to operate the website, remember your preferences, analyze traffic, improve performance, and deliver relevant advertising.

These technologies may include:

  • Necessary cookies: Required for website security, checkout, shopping-cart functions, and account access

  • Functional cookies: Remember preferences such as language, location, or currency

  • Analytics cookies: Help us understand how customers use our website

  • Advertising cookies: Help measure advertising performance and provide more relevant promotions

You can manage cookies through your browser settings or through the cookie-preference tools available on our website.

Disabling certain cookies may prevent some website functions from working correctly.

How We Disclose Personal Information

We may disclose personal information to third parties when reasonably necessary to operate our business, including:

  • Shopify and other website-service providers

  • Payment processors

  • Shipping, logistics, and fulfillment partners

  • Customer-service providers

  • Email and SMS communication platforms

  • Analytics providers

  • Marketing and advertising partners

  • Fraud-prevention and security providers

  • Professional advisers, including accountants, insurers, and legal advisers

  • Government agencies, regulators, or law-enforcement authorities when required

We may also disclose information:

  • To comply with applicable laws or legal processes

  • To investigate fraud, security incidents, or violations of our policies

  • In connection with a merger, acquisition, financing, restructuring, or sale of business assets

  • With your consent or at your direction

We may use or disclose aggregated or anonymized information that cannot reasonably identify you.

Advertising and Data Sharing

We do not knowingly sell personal information for money.

However, some privacy laws may define certain advertising, analytics, or data-sharing activities as a “sale,” “sharing,” or use for “targeted advertising,” even when no money is exchanged.

Depending on your location, you may have the right to opt out of these activities. Where required, you can use the Your Privacy Choices or data-sharing opt-out link available on our website.

Where legally required, we also recognize supported browser-based opt-out signals, such as the Global Privacy Control.

Email and Text Marketing

If you subscribe to marketing communications, we may send you:

  • Product announcements

  • Special offers

  • Promotional messages

  • Abandoned-cart reminders

  • Restock notifications

  • Other store updates

You can unsubscribe from promotional emails by selecting the “Unsubscribe” link included in the message.

If SMS marketing is available and you provide consent, message and data rates may apply. You can opt out by following the instructions in the message or by contacting us.

Opting out of promotional messages will not prevent us from sending necessary transactional communications, such as order confirmations, delivery updates, or customer-service responses.

Data Retention

We retain personal information only for as long as reasonably necessary to:

  • Provide our services

  • Complete transactions

  • Maintain business and tax records

  • Resolve disputes

  • Prevent fraud

  • Enforce our agreements

  • Meet legal and regulatory obligations

Retention periods may vary depending on the type of information and the reason it was collected.

When personal information is no longer required, we may delete, anonymize, or securely dispose of it.

Data Security

We use reasonable administrative, organizational, and technical safeguards designed to protect personal information from unauthorized access, disclosure, alteration, loss, or misuse.

Our website uses SSL encryption to help protect information transmitted online.

However, no website, electronic transmission, or storage system can be guaranteed to be completely secure. You are responsible for keeping your account credentials confidential and notifying us if you suspect unauthorized account activity.

Your Privacy Rights

Depending on where you live, you may have the right to:

  • Request access to your personal information

  • Request correction of inaccurate information

  • Request deletion of your information

  • Receive a portable copy of certain information

  • Restrict or object to certain processing

  • Withdraw consent where processing is based on consent

  • Opt out of targeted advertising or certain data sharing

  • Appeal a decision regarding a privacy request

  • Submit a complaint to an applicable data-protection authority

These rights may be subject to legal exceptions.

To submit a privacy request, contact us using the information provided below. We may need to verify your identity before completing the request.

You may also use an authorized agent where permitted by law. We may request proof that the agent is authorized to act on your behalf.

California Privacy Rights

If you are a California resident and applicable law applies to Havllisan, you may have the right to:

  • Know what personal information we collect, use, and disclose

  • Access specific pieces of personal information

  • Correct inaccurate personal information

  • Request deletion of personal information

  • Opt out of the sale or sharing of personal information

  • Limit certain uses of sensitive personal information

  • Receive equal service without unlawful discrimination for exercising your rights

To submit a California privacy request, contact us with the subject line:

“California Privacy Request”

European, UK, and Swiss Privacy Rights

If you are located in the European Economic Area, United Kingdom, or Switzerland, we may process your information under one or more of the following legal bases:

  • Performance of a contract

  • Compliance with legal obligations

  • Our legitimate business interests

  • Your consent

Where applicable, you may object to certain processing, withdraw consent, request data portability, or submit a complaint to your local data-protection authority.

International Data Transfers

Havllisan operates internationally. Your personal information may be transferred to, stored in, or processed in Hong Kong, the United States, Canada, or other countries where Shopify and our service providers operate.

Privacy laws in these locations may differ from those in your country. Where required, appropriate safeguards may be used to protect personal information transferred internationally.

Children’s Privacy

Our website and services are not intended for children under the age of 13, and we do not knowingly collect personal information from children.

If you believe a child has provided personal information to us, please contact us so we can take appropriate steps to delete it.

Customers under the age of legal majority in their location may use our services only with the involvement and consent of a parent or legal guardian.

Third-Party Websites

Our website may contain links to websites, applications, or services operated by third parties.

Havllisan is not responsible for the privacy, security, accuracy, or content of third-party services. We encourage you to review their privacy policies before providing personal information.

Changes to This Privacy Policy

We may update this Privacy Policy periodically to reflect changes in our business practices, technology, legal requirements, or services.

The updated version will be posted on this page with a revised “Last Updated” date. Where required, we may provide additional notice of significant changes.

Contact Us

For privacy questions, data requests, complaints, or requests to unsubscribe, please contact us:

Brand: Havllisan
Operating Company: Hong Kong Gastech Engineering Limited
Email:support@Havllisan.com
Phone: +1 (213) 212-7179
Website: https://Havllisan.com/

Business Address:
Unit 85, UB Floor, Eton Tower
8 Hysan Avenue
Causeway Bay, Hong Kong