1. 100% of the products will be inspected before delivery, and the unqualified products will not leave the factory, so that the products can reach high quality and reliability.

2. If any quality problem is found during the user's use, it will arrive at the scene within 48 hours in the province and 72 hours in the country after receiving the user's notice.

3. If it is really a product quality problem, it shall be repaired, replaced and returned within 18 months from the date of delivery.