Hi3D Cookie Policy

Effective date: August 14, 2026

Last updated: August 14, 2026

This Cookie Policy explains how Oceano HK Holding Limited (“Hi3D,” “we,” “us” or “our”) uses cookies and similar technologies on hi3d.ai and related online services (collectively, the “Services”).

Please read this Policy together with the Hi3D Privacy Policy, which explains how we process personal data and how you may exercise your privacy rights.

1. What are Cookies?

Cookies are small text files stored on your browser or device when you visit a website. We may also use similar technologies, such as local storage, pixels, tags, software development kits and device identifiers. We refer to all of these as “Cookies.”

Cookies may expire when you close your browser or remain until they expire or you delete them. They may be set by Hi3D or by a third-party provider.

2. How we use Cookies

We may use:

Strictly necessary Cookies for login, authentication, security, fraud prevention, payment processing and storage of privacy choices. The Services may not function properly without them.
Functional Cookies to remember language, region, interface settings and other preferences.
Analytics Cookies to understand use of the Services, measure performance, identify errors and improve our products.
Advertising Cookies to measure advertisements or conversions and provide advertising based on online activity.

3. Cookies used by Hi3D

Cookie or technology	Provider	Category and purpose
Google Tag Manager	Google LLC	Tag management - loads tags based on consent choices
Meta Pixel	Meta Platforms, Inc.	Advertising measurement - measures visits and conversions

Third-party providers may process information under their own privacy policies.

4. Your choices

Where required by law, optional Cookies are not activated until you make a choice. Strictly necessary Cookies may operate without consent where permitted.

You may accept, reject or change your choices at any time through our Cookie Settings [insert the Cookie Settings link]. Rejecting optional Cookies will not prevent access to the core Services, but some optional features may not work as intended.

Your choices apply to the browser and device on which they are made. You may need to set them again if you change devices or browsers, clear Cookies or use private browsing. You can also block or delete Cookies through your browser settings, although blocking all Cookies may affect essential functions.

5. Retention and international processing

Cookie lifespans are listed in Section 3. Information obtained through Cookies is retained only for as long as reasonably necessary for the stated purpose or as required by law.

Cookie information may be processed outside your country or region. Where required, we use safeguards for international transfers as described in the Hi3D Privacy Policy.

6. Changes and contact

We may update this Policy when our Cookies, providers, Services or legal obligations change. We will post the revised version and update the “Last updated” date. We will provide additional notice or request consent again where required by law.

Questions about this Policy may be sent to:

Oceano HK Holding Limited

Email: legal@mathmagical.com

Address: SUITE 6503, 65/F, CENTRAL PLAZA, 18 HARBOUR ROAD, WAN CHAI, HK