In order to further ensure product quality, we have passed ISO9001 quality management system certification and 3C certification, and continue to work hard to improve the quality management system. Regarding product quality and customer service, we solemnly promise to society and users as follows:

1. Strictly implement the national standards related to products (or meet the special requirements of users). The product qualification rate is over 98%.

2, Guotao company service purposes: customer first, quality, quality service.

The company has established a user profile and user information feedback system. The sales department has tracked the user and the local marketing network, conducts quality consultation, and promptly processes and responds to 100% of user opinions and quality issues. When necessary, a special person will be sent to the scene to solve the problem until the user is satisfied.

3. In order to ensure the needs of users, the company will guarantee the delivery according to the requirements of the contract to ensure timely delivery according to quality, quantity and schedule. Failure to obtain the user's consent to overdue delivery may be treated as a default by the company.