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low consumptionA technology which can be a solution to the exploitation of oil and gas hydrogen sulfide corrosion in a drill pipe and pump1. November 2008 - 15:53 — 李天忠Short Description:
The invention of the technology and control technology to effectively adjust the hardness of workpiece, without changing the original material on the basis of performance so that the work to eliminate
Status:
Patent-/IPR-protected
Image:
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