Hong Kong:
England BOST Audio Group (Hong Kong) Investment Co., Ltd.
Address: Fa Yuen Street, Mong Kok, Kowloon, Hong Kong 2-16 Ho King Commercial Building, 10th Floor, Room 1005 (B)
Tel: 00852-81312057
Fax: 00852-81312067
Website: http: //www.bost-pro.com
National Service Tel: 18566096305  13802524168

Chinese mainland headquarters:
Guangzhou Hao Yin Audio CO.,Ltd.

Address: Room 501, building No.3, No. 22 ,1st street, Daban Industrial, Tinggen Villiage,  Shatou Street,Panyu District, Guangzhou City , Guangdong Province, China

Tel: (86) 020-29071896
Fax: (86) 020-31001962