Non-Magnetic Drill Collar
Henan Zhongyuan Special Steel Equipment Manufacturing Co., Ltd.
Enamel assembled tanks
Shijiazhuang Zhengzhong Technology Co., Ltd.
TH type chain bucket elevator
GUANGXI BAISE MINING MACHINERY FACTORY CO., LTD.
Plate heat exchanger
Shandong Tuodun Heat Exchange Equipment Co.,Ltd.
Hot-dip galvanized steel pipe
Shaanxi Youfa Steel Pipe Co., Ltd.
WZPKK Series Armored Assembly Platinum Resistor
Jinzhou Jingwei Instruments Co., Ltd.
Ceramic elbow
Hebei Longrun Pipeline Group Co., Ltd.
Long-Stroke CNC Bidirectional Speed-Regulating Belt Pumping Unit
Lanzhou LS Petroleum Equipment Engineering Co., Ltd.
Geothermal Drilling Rig
Sichuan Honghua Petroleum Equipment Co., Ltd.
DN15 Gas Emergency Shut-off Valve
Zhejiang WEAJA Electronic Technology Co., Ltd.
Ball Valve
Shanghai Huhang Valves Co., Ltd.
10kV series dry-type prefabricated substation
Sichuan Fulaite Power Equipment Co., Ltd.