1) Shenhzen Headquater Office

Add: 6th Floor East, No.7 Building, Gaofa Science & Technology Park, Shenzhen,518000,China.

Tel: +86-755-26502228

Fax: +86-755-26502238

E-mail:bs@bsjd.com (Foreign Orders)

2) Shanghai Office

Add：Room 1408, Building 1, Automation Instrument Town, Caobao road 103, Xuhui District, 200233, Shanghai

Tel：021-64844582 64844583

Fax：021-64844585

3) Hong Kong Office (Crown International Trading Co.)

Add：Room 1001 Goldfield Tower, 53-59 Wuhu Street, Hung Hom, Kowloon, Hong Kong

Tel：00852-27658128

Fax：00852-27646827