- Puyang Zhongshi Group Co., Ltd.
- Float Collar and Float Shoe, Cementing Basket, Stage Collar, Cementing Head
Henan
- Unibrom Corp.
- flame retardant
Shandong
- STARSE Energy and Technology (Group) Co., Ltd.
- Sand Control Screen Downhole Tools and Service, Icd/Aicd Water Control Screen
Shanghai
- Tianjin Dongfanglong Petroleum Equipment Manufacture Co., Ltd.
- API 5CT Tubing and Casing Pipe, API 5CT Tubing and Casing Pup Joint, API 5CT Tubing and Casing Coupling, Down Hole Tools Cementing Tools
Tianjin
- Nantong Strong Petroleum Technology Co., Ltd.
- Safety Clamps, Manual Tong, Pneumatic Spider, Slip Inserts, Elevator, Power Tong, Drill Pipe Elevator, Stabbing Guide, Drill Tool Gauge, Tong Dies
Jiangsu