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InnovativeA new technology to improve the petroleum extraction efficiency of the oil-well pump19. October 2008 - 7:49 — 李天忠Short Description:
A new preparation technology which can make the oil-well pump's pump barrel, plunger and pump valve withstand a high temperature and high temperature corrosion and wear
Status:
Patent-/IPR-protected
Image:
 (1 vote) |
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