Customized service:
Update Time：2018-8-28 Source：www.chenlinchina.com
we can product according to your detail demand,or change the little part as your requirement.
Warranty period:
Life-time warranty. Any problem caused by our party within one year from the date of shipment, we will provide free spare parts for the repairment. After one year, we can provide the spare parts, but the user should pay for the related cost, including cost of the spare parts, delivery cost etc.
If you can not use ,we still can teach you on the internet.Untill you can use by yourself.