Service Delivery & Development DepartmentOffice Hours: 24 hours a dayCustomer Service CentreTel: (86-755) 2518 0000Fax: (86-755) 2529 4010E-mail: yict.csc@yict.com.cnDuty ManagerTel: (86-755) 2529 0462Fax: (86-755) 2529 0463E-mail: yict.dm@yict.com.cn