Address：South District, Jiugong Industrial Park,Beijing Economic and Technological Development

Code：100076

Sale Telephone：010-87972860

010-87919717

Service Telephone：010-87913053

Fax：010-67988830

Email：nhlk@bjnhlk.com

Address（TianJin）：No.19,Xiaqing road, Tianjin Development Zone

Telephone：1861814531