1. Service commitment
Take the customer as the center, conquer the customer with consummate technology and perfect service. Use love to serve, customer first, and have a good image of "Yan Zhen brand" in the heart of the customer.
Strive to achieve zero customer complaints, the implementation of the "three service" within the warranty period, all free service; all-weather service; comprehensive on-site service, free installation.

2. Policy of warranty
The whole machine is free for one year, and is responsible for the maintenance of the whole life. But the equipment failure caused by the following causes will not undertake the obligation of free warranty:
1) not our products.
2) the failure caused by the expansion of the components without our approval is used.
3) the equipment has passed the warranty time.
4) abnormal reasons such as moving, collision, abnormal operation, and failure to follow the prescribed electricity.
5) fault caused by self disassembly, repair and installation error.
6) force majeure: an irresistible fault, such as an earthquake, a fire, or other natural disasters or other accidents.