- Linyi Yanjun Carbon Material Co., Ltd.
- Graphite Electrode, Graphite Powder, Carbon Additive, Carbon Raiser, Carburant, GPC, Graphite Petroleum Coke, CPC, Needle Coke, Graphite Fines
Shandong
- TRYTE TECHNOLOGY (HUNAN) DEVELOPMENT CO., LTD.
- Gas Chromatograph, Liquid Chromatograph, Atomic Absorption Spectrophotometer, Geology Instrument, Coal Testing Instrument, Petroleum Products, Analysis Instrument, Refrigerate Freezer Machine, Element Analyzer, PCP Board Related Products, Other Lab Equipment
Hunan
- Shandong Beyond Petroleum Equipment Co., Ltd.
- Mud Pump, Oil Drilling Rig, Workover Rig, Drilling Equipment Parts, Mud Pump Parts, Wellhead Handling Tools, Solid Control, Hydraulic Power Tongs, Bop
Shandong
- Hebei Fangke New Material Technology Co., Ltd.
- Calcined Petroleum Coke, Graphite Electrode, Graphite Petroleum Coke
Hebei
- Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd.
- Tungsten Carbide
Hunan
- Hebei Saichuang New material Technology Co., Ltd.
- Calcined Petroleum Coke, Graphitized Petroleum Coke, Petroleum Coke, Pet Coke, Graphite Electrode, Anthracite Coke, Lubricating Grease
Hebei
- Shandong Xilong Machinery Equipment Co., Ltd.
- API Elevator, Rubber Hose, Power Tongs, Wellhead & Well Control System, Drilling Rig Accessories, Swivel, Downhole Tools, Cementing Tools, Kelly Pipe Hexagonal Pipe Drilling Pipe, Non-Magnetic Drill Collar
Shandong