Tianhe Petroleum Machinery Joint-Stock Co., Ltd is a technological private company which produces petroleum machinery equipment and tools. Established in 1973, there are three subsidiary companies which is Huifeng Petroleum drilling tools Co., Ltd 、Xi’an Changqing Petroelum Machinery Co., Ltd and Beijing Tianshijiaye Energy Technology Co.,Ltd.
The main products of the company include: Drill Collar、HW Drill Pipe、Hydraulic...
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