青州天洋石油机械有限公司
Exhibit Profile：
Russian mud pump big gear ring、pinion shaft. All kinds of F series mud pump big gear ring、pinion shaft. Drilling mud tank with submarine valve、 sand discharge door、mud gun、 hammer union and so on.
Russian mud pump big gear ring、pinion shaft. All kinds of F series mud pump big gear ring、pinion shaft. Drilling mud tank with submarine valve、 sand discharge door、mud gun、 hammer union and so on.
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