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Shanxi HUANJIE Petroleum drilling tools manufacturing Corp., Ltd.(Original call: Taiyuan HUANJIE Petroleum drilling tools Co***ny, Ltd.) is a joint-stock Corporation, Ltd. with manufacturing & trading in the Petroleum drilling tools and casing. It is a high scientific center which focus on scientific research, products developing, manufacturing and marketing . It is engaged in design, manufacturing and repair in the petroleum mechanism, drilling tools and casing. Besides those, it is engaged in petroleum-dr |
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