Ltd. was founded, that is, adhering to the professional spirit of YCK "to take the success of customers as their own responsibility", and established a perfect after-sales service system. In order to provide customers with fast, timely and satisfactory technical support, the company has set up representative offices in Shanghai, Guangzhou and Chengdu respectively, equipped with laboratories and a group of engineers with many years of experience, as the technical service and support center in each region.