KERUI GROUP

MH

SINOWELLKING

Anton Oilfield

Ansteel Group

Guotai

Hilong Group of Companies

Henan Coal Field Geological Bureau

SPT Energy Group Inc.

Inner Mongolia Coal Geological Exploration (Group) Co., Ltd.

Ningxia Iron and Steel (Group) Co., Ltd.

Shanxi Fenglei Machinery Co., Ltd.

Shanxi Coal Geological Bureau

Shaanxi Investment Group

Taiyuan Iron&Steel

Taiyuan University of Technology

Tengli Oilfield

Tianyuan

Xi’an Shiyou University

Yutong Pipeline