- Best-all Petroleum Machinery Co., Ltd.
- Mud Pump Liner; Mud Pump Piston; Valve Assembly; Cylinder Liner; Bi-Metal Liner; Mud Pump Cylinder
Shandong
- STARSE Energy and Technology (Group) Co., Ltd.
- Sand Control Screen Downhole Tools and Service, Icd/Aicd Water Control Screen
Shanghai
- Hebei Yingpai Import & Export Trading Co., Ltd.
- Drilling Rig Equipment and Parts, Mud Pump and Parts
Hebei