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連絡先担当者 Mr. feng
xingsheng, baotou, inner mongolia
The company certified ISO***1 Quality System Assessment, the number of API Certificate of our company are *1B****1 for sucker rod and *******2 for drill collar . Our products and producing ability are: 1ã€sucker rod **0 myriameter/year 2ã€drilling collar *0, **0 /year 3ã€drill pipe *0, **0 tons/year 4ã€tubing (thickening) *0, **0/year