彼尔姆 (俄罗斯) 阿布扎比 (阿拉伯联合酋长国)

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Cangzhou Great PDC Drill bits Co., ltd

Cangzhou Great PDC Drill bits Co., ltd specializes in designing, manufacturing, marketing and serving the high performance diamond bits and drilling tools used in petroleum industry .The company is established by the top experts of the field , and equipped…

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