
Packers Plus Energy Services, Inc.Alberta, Canada

Clayton IndustriesCalifornia, United States

Centek Ltd.Devon, United Kingdom

Diamond Offshore Drilling, Inc.Texas, United States

Nexen Corp.Gyeonggi-do, South Korea

Ensign Drilling, Inc.

Schoeller-Bleckmann Oilfield Equipment AGAustria

Halliburton Energy Services, Inc.Texas, United States

Haimo Technologies Group Corp.Gansu Sheng, China

Coastal Chemical Co. LLC

Sourcewater, Inc.Texas, United States

RPC, Inc.Georgia, United States