1. free installation and commissioning, free on-site training;

2. provide telephone operation from 8:00 to 22:00 every day;

Maintenance consultation and diagnosis (no holidays);

3. arrive in Jiangsu, Zhejiang and Shanghai within 8 hours after receiving the maintenance notice; Arrive within 12 hours in East and South China, and within 24 hours in other regions;

4. regularly visit customers, track and understand the use status;

5. establish customer files, improve service quality, and regularly guide customers to maintain on time;

6. if the customer has any questions, contact the company's telephone number and QQ, and the company will provide technical support;

7. long term preferential supply of accessories and consumables;

8. the database shall be upgraded once a year. If the hardware allows, it shall be upgraded for free for life.