US office
Ontrac Internationl LLC
Address: 4790 Irvine Blvd Ste 105-159, Irvine, CA 92620
E-mail: export@ontracinstrument.com
China Office
Ontrac Instrument (Shanghai) Co.,Ltd
Address: 3F, North 2 Suite, No.334 Jinhu Road, Pudong New Area, Shanghai
Tel:+86 21 5032 3029
Fax:+86 21 5032 3027
E-mail: export@ontracinstrument.com