USA Headquarters
Address:4660 Norris Canyon Road San Ramon, CA 94583
Tel:855-347-7989
Fax:855-348-4625
Email :sales@freq-tech.com
Europe
Transtech Electronic ,S.R.O.
Tel:+420-261-221-039
Fax:+420-261-221-040
Email : sales@freq-tech.com
China
Shanghai Bozhen Electronics Co., Ltd
Address:Rm1301,No.6,Lane 199,JinGang Rd,Pudong,Shanghai
Tel:+86-21-5977-3048
Fax:+86-21-5972-0896
Email: bozhen@263.net 
4660 Norris Canyon Road San Ramon，CA 94583