Navigation and content
The site uses semantic headings, labeled form fields, visible keyboard focus, a skip-to-content link and expandable menus that can be operated with a keyboard. Important information is available as text.
Display preferences
Layouts adapt to smaller screens and content can be enlarged with browser controls. The site respects a preference for reduced motion. Wide pricing comparisons are contained in a horizontally scrollable region.
If you encounter a barrier
Use the contact form to describe the page, device and issue, or contact your existing TANTU AI representative. Please avoid sending sensitive information when reporting a problem. These design measures are not a claim of independently certified conformance.
Using the site with a keyboard
Use Tab and Shift+Tab to move between links, menus and form fields. Press Enter or Space to open a menu or an FAQ answer, and Escape to close the main navigation. The skip link takes you to the page content. Comparison tables can be focused and scrolled horizontally when your screen is narrow.
Sending an inquiry
Required fields are identified on the form. If a submission needs correction, an error summary appears above the fields and keeps the details you entered. You can download an unsent copy of your brief. A successful online submission shows a reference number; downloading a brief does not send it to us.
An alternative contact route
If the form or a page prevents you from contacting us, call +86 139 1805 6045 or write to Room 1812-181, Suhe No. 1, 638 Hengfeng Road, Jing’an District, Shanghai, China. Include the page address and the barrier you encountered, without sensitive personal information. Our team operates from Shanghai, China (UTC+8).