During the warranty period, our company will repair or replace the quality problems of the equipment free of charge. Responsible for free upgrade and maintenance of equipment software. There is a 24-hour quality information feedback hotline, which accepts user feedback 24 hours a day, and is responsible for responding in a timely manner, dealing with problems and organizing technical services. Establish special files for the operation of the equipment, and conduct regular follow-up and understanding. And regularly solicit equipment operation opinions from the user, and when necessary, send technicians to solve problems and provide technical guidance to the operators to ensure the safe operation of the equipment.