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How lubricating oil is made - material, history, used ...
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How lubricating oil is made - material, history, used ...
Website URL:
http://www.madehow.com/Volume-1/Lubricating-Oil.html
Category:
Lighting Fixtures > Portable Lighting > Portable Spotlights
Lubricating oil is refined from crude oil. After undergoing a purifying process colled sedimentation, the crude oil is heated in huge fractionating ...
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