Hebei North China Petroleum supplies wellhead equipment for North China Oilfield.

Hubei Jianghan manufactures cementing, fracturing and logging equipment.

Wuhan Optics Valley develops fiber optic sensors, downhole instruments and intelligent monitoring systems for petroleum.

Baoji Petroleum Steel Pipe produces corrosion-resistant petroleum tubular goods and special alloy fittings.

Xi'an Changqing manufactures production equipment and gathering facilities for Northwest China oil and gas development.

Dalian Shipbuilding Offshore is a leading offshore equipment manufacturer in Northeast China.

Liaoning Liaohe manufactures pumping units, screw pumps and heavy oil production equipment.

Sichuan Deyang Heavy focuses on design and manufacturing of large drilling rigs and workover rigs.

Sichuan Chuanyou manufactures fracturing and cementing equipment for oil and gas field development.