Company implements centralized management and partition responsible.By setting up after-sales service and quality supervision line,we offer 24 hours telephone and fax service.Company has comphrehensive crews with excellent technique,good service and each of whom can serve singly.For uers' feedback,reply within 2 hours,reach the spot in a day within 800KM and no more than 2 days if 800KM exceeded.For those that cannot be reached immidiately,we guide firstly by phone till screw members arrive at the scene.Each service staff has after-sales feedback form.Uers can evaluate the service quality and attitude.By this,we elimate uers' prolbems and be on call at any time.