In order to guarantee customers to buy machinery with better after-sales service, we provide mechanical after-sales service process as follows: 1. After the customer purchases the machine, if the machine fails, the customer can contact us by checking the contact information of the warranty card provided with the machine. 2, the customer should describe the problems and phenomena of mechanical failure and send us an email to inform us that we will respond to the customer within 10 hours. We will provide customers with solutions or operational video guidance. 3. The customer can check the mechanical instruction manual to solve the problem.