The centralizing sucker rod scraper, which is a new patent technology, can scrape wax mechanically and prevent sucker rod’s eccentric wearing, has been manufactured and tested successfully by our company. It’s service lifetime is more than 15 years.Therefore, chemical ...

Dongying Lake Petroleum Technology co.,ltd    [Mechanical Parts & Fabrication Services]   [Other General Mechanical Components]   [2018-05-11 10:34:58 ]

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