U.S.A. : 138 Mountain brook Drive, Canton, GA 30115, U.S.A.                           email:service@otctelecom.com
Tel: +1-800 -753 1707, 770-345 8900      Fax: +1- 770- 345 8142                     http://www.otctelecom.com

Hong Kong : B7, 6F., Chung Mei Centre, 15B Hing Yip Street, Kwun Tong, Kowloon, Hong Kong
Tel: +852- 2344 6878                               Fax: +852-2344 6308


China :                                                                                                               email:bvi@functiongroup.com.cn
No. 8, Hui Tai Road, Hui Tai Industrial Zone, Huizhou, China                            http://www.functiongroup.com.cn
Tel: +86-752-260 3666, 260 1957           Fax: +86-752- 260 1958
No. 9, Dragon Jade Industrial District, Bantian Village Buji Town Longgang District, Shenzhen, China
Tel: +86-755-899 3643, 889 4193           Fax: +86-755-889 3241     

                                 
Taiwan:
12F., No.33 Sec. 2, Roosevelt Road, Taipei, Taiwan                                          email:service@functiongroup.com.tw
Tel: +886-2-2394 4185, 2356 8711         Fax: +886-2-2341 6279, 2356 8970   http://www.functiongroup.com.tw