8. After-sales service <br>(2) Provide lifelong technical consulting and technical training services. <br>(3) Tracking service, regular return visits, problems found, and after-sales plan feedback within 8 working hours.
8. After sales service<br>(2) Provide lifelong technical consultation and training services.<br>(3) Track service, conduct regular follow-up visits, identify issues, and provide feedback on after-sales solutions within 8 working hours,
Eight after-sales service<br> (2) provide technical consultation and technical training services for life.<br> (3) Follow up the service, pay regular return visits, find problems, and feedback the after-sales plan within 8 working hours.