During the after-sales service period, the company's after-sales service department will provide the following service items:

• Accept user feedback, reply or deal with it in a timely manner, and store the corresponding information in the user maintenance database

• Analyze the reasons within the company and put forward improvement suggestions and plans

• The after-sales service department will organize personnel to communicate with customers to improve opinions and plans

• Develop a quality improvement plan

• The after-sales service department will organize customer service staff to negotiate with customers about return and replacement and quality improvement