Tel :010-84263092/84263093/84261492/84262152

Fax  :010-84263092/84263093

Add  : Tiandi mansion in the ministry of Central Coal Mining Research Institute, 5 Qingniangou Road, Hepingli district, Beijing city, P.R.C.

Postcode :100013

E-mail:jct@jct2000.com