Terms of after-sales service:

1. Quick Response Commitment: Testing Yan Jinglin promises to respond to any technical support request within 24 hours and provide professional guidance and assistance.

2. Repair service: We provide free repair service for all "Machine Seat"brand machines within one year, starting from the date of purchase. Repair services do not cover damage caused by improper operation or external factors.

3. Spare parts replacement: For spare parts that fail under normal use, we provide free replacement during the warranty period. Replacement of parts beyond warranty will be offered at competitive prices and professional advice.

4. Remote diagnosis service: Test Yan Jinglin provides remote fault diagnosis service to ensure that customers can get expert remote guidance and solutions in time when they encounter problems.

5. On-site technical support: For complex faults, we will send technical engineers to provide on-site services when necessary. The specific conditions and time of service will be determined on a case-by-case basis and agreed with the customer.

6. Regular Maintenance: We recommend and offer regular maintenance service plans to ensure efficient performance and extended service life of machines. Additional charges may apply for this service.

7. Training and support: We offer initial and advanced training services on the use and maintenance of "machine sit"products to ensure that customers are able to take full advantage of the potential of our machines.

8. Feedback Loop: Any feedback from customers is reviewed through quality improvement meetings to ensure continuous improvement of our products and services.

9. Optional Extended Warranty: Customers can choose to purchase an extended warranty for longer periods of protection and support.

These Terms of Service are intended to provide customers with comprehensive, transparent and reliable support to ensure