Beijing headquarters
Address:Room 2504, Block A, Huirong Building, 106Lianhuachi East Road, Xicheng District, Beijing
Postal code:100055
Email address:info@dsip.com.cn
Telephone:010-6389 5529、6398 9765、6397 9129、6920 4772
Fax:010-6398 8419
Record number:No.2021016451-1