To provide better technological service and promote the satisfaction degree of our clients, we will have periodical visits and collect the needs of our customers. At the same time, we have set supervisal telephone number, fax and on-line questionnaries. You can choose any way to make evaluation and suggestion about technology service. Complaint telephone number: Tel: 086 - 512 -58321151, 086 - 512 - 58320180 Complaint Fax: 086 - 0512 - 58980061 Mobil: 13301562775, 13328034588