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Yugong,Jiyuan,Henan,China China
Drill collars we produce is made from ***5H forging or rolling modified steel. Raw Materials are all from Top
Heavy weight drill pipes we produce are integral. Materials are from AISI ***5H modified drill collar material
Shenlong&#*9;s non-mag products include non-magnetic drill collar and non-magnetic stabilizer. The material is
الشخص الذي يمكن الاتصال به Ms. nancy wang
عنوان Yugong, Jiyuan, Henan
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