After-sales Service Letter of Commitment:

All products purchased from our company are guaranteed to keep in good repair for one year. If quality problems happen in guarantee period, our company will maintain for free. Additionally, our company provides technical support and fittings for life. After-sales service isn't restricted by time and we will assign technical personnel to solve your problems immediately after receiving telephone and hear feedback idea of users and deal with them in time. If you are caught in some problems when using our products, welcome to contact us at any time.

After sale service undertaking

Ⅰ、service commitment

Of all about product quality complaints, within 24 hours after the reply,  and to determine the treatment measures according to the complaint, repair and replacement, until the customer satisfied.

Ⅱ、Returned goods commitment

1． User quality problems arise in the normal use condition, in the warranty period please fast contact with our company, to facilitate the users receive timely maintenance and replacement.

2．The following situation cannot enjoy my company exchange commitment.

a．Product was not normal use.

b．Abnormal conditions, wet storage.

c．Beyond the shelf life.

The service commitment to the final interpretation of the  Wuhan ZHISHENG Science & Technology  Co.,Ltd