If your instrument requires calibration or repair, you can submit an application form through our website, and we will contact you as soon as possible. You can track the after-sales progress through customer service.

If your instrument requires calibration or repair, you can submit an application form through our website, and we will contact you as soon as possible. You can track the after-sales progress through customer service. Tongmen Electronic Technology is committed to responding quickly to your needs. As long as you contact us through the website, phone, WeChat, or any other method, we will value your every request.