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    1. products

      產品中心

      Our Latest Work

      油套管系列

      Tubing and Casing Series

      接箍系列

      Coupling series

      復合鍍滲鎢合金系列

      Composite plating tungsten alloy series

      鍍鎳銅錫系列產品

      Nickel plated copper tin series products

      石油工具系列

      Petroleum tools series

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