The most perfect after-sales service system

After-sales tracking of membrane material products:

a. Establish a special customer file;
Establish a customer file system to better serve customers,

b. Regular use status investigation and return visit;
Professional and technical personnel conduct customer return visits on product usage

c. Hearing and implementing customer improvement opinions;
Listen to the improvement ideas put forward by customers, conduct internal technical research and judgment, implement the parts that can be implemented, and explain the reasons to the customers in detail for the parts that cannot be implemented.

d. Other.