To contact Thanh Dat Medical and repair genuine dental chair, you can follow these steps:

Find contact information: First, you need to find the contact information on website https://thanhdatmedical.net of Thanh Dat Medical. You may have found this information on their website, in related advertising or documents. If not, try searching the Internet by typing "Thanh Dat Medical contact" or "Thanh Dat Medical repair dental chair" to find the correct contact information.

Call: If you have found Thanh Dat Medical's contact number, call them directly to talk to them about genuine dental chair repair. When calling, be sure to include specific information about the condition of the dental chair and the request for repair.

Email: If you are unable to phone or would like to submit a written request for dental chair repair, email Thanh Dat Medical. In the email, provide details about the condition of the dental chair and request a repair.

In-person visit: If you are near Thanh Dat Medical's location, you may decide to visit their store or office in person to request and discuss dental chair repairs.

Social contact: If Thanh Dat Medical has an active social network, you can also try contacting them through their social media channels, like Facebook, Instagram, or LinkedIn.

When contacting, please provide detailed information about your dental chair type and the problem you are experiencing so that Thanh Dat Medical can provide support and suggest the best solution for you.