1. Product quality assurance: We promise that all products will be strictly inspected before leaving the factory. If there are quality problems within the normal use range, you can enjoy the return and exchange service. Service 123 2. Customer consulting service: Provide professional product consulting services to answer various questions encountered by customers during use. 3. Product repair service: If the product is damaged due to non-human factors, free repair service will be provided during the warranty period. 4. Complaint handling mechanism: Set up a special complaint handling department to ensure that an initial response is given within 24 hours after receiving a customer complaint and the problem is resolved within 7 working days. 5. Regular return visit service: The after-sales team will return customers regularly to understand the product usage and customer feedback, and continuously improve and enhance service quality.