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Yantai Samon Machinery Equipment Limited

Free member Since 2014

Shandong, China

Hollow sucker rod :is a kind of sucker rod with middle flow channel. It can be used as ordinary sucker rod to transfer driving power,but also can be filled with diluents, light oil.preservatives and hot oil via inner channel to reduce oil viscosity...

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catherine cooper ( Yantai Samon Machinery Equipment Limited )
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