Tilted long ring rack pumping unit is a first invention in the world, which is competitive in energy-consumption, efficiency, land-space coverage and convenience.

倾斜式长环形齿条抽油机是世界首创，其节能、高效、环保、占地少、使用方便。

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Tilted long ring rack pumping unit is a first invention in the world, which is competitive in energy-consumption, efficiency, land-space coverage and convenience.

倾斜式长环形齿条抽油机是世界首创，其节能、高效、环保、占地少、使用方便。

youdao