- Heilongjiang North Shuangjia drilling tools Co.,Ltd.
- Main products: Downhole Drilling tools, Stabilizers, Roller reamers, Hole openers etc., Jars: Drilling jar, fishing jar, Jar intensifier, Casing running tools: mechanical type and internal type, Kelly valve, FOSV, IBOP, Drop-in check valve etc., Fishing tools: Overshot, spear, Mills etc.
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Grace Wang
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Heilongjiang North Shuangjia drilling tools Co.,Ltd.
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Grace Wang
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