Headquarters
- Address：No.969-6#, Kaixuan Street, Dagang Petro. Chem. Area, Binhai New District, Tianjin, P.R. China
- Postal Code：300270
- Email：nkhc@tjhecheng.com
- Website：www.tjhecheng.com
Office
- Tel：+86-22-63233565 / 63233557
- Fax：+86-22-63233557
Sales Department
- Tel：+86-22-23503850 / 23503851 / 23509303 / 63233558
- Fax：+86-22-23503859
- Email：sale1@tjhecheng.com sale2@tjhecheng.com
- Website：www.tjhecheng.com
Office in Nankai University
- Address：No.94, Weijin Road, Nankai University, Tianjin, P.R. China
- Postal Code：300071
- Tel:+86-22-23508353 / 23503146
- Fax：+86-22-23509300
- Email：sale2@tjhecheng.com
- Website：www.tjhecheng.com
U.S. Office
- Address：546 Trinidad Lane, Foster City, CA 94404, U.S.A
- Postal Code：CA94404
- Tel:+1-650-349-8810
- Fax：+1-650-571-1812
- Email：tjhc@vip.163.com
- Website：www.tjhecheng.com