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1·This Model Vacuum pump can be used along, or as the backing pump of the other kinds of pumps, such as booster pump, diffusion pump, molecular pump etc.

它可以单独使用，管道泵也可作为增压泵、扩散泵、分子泵的前级泵使用。

2·Non-pollution, The pump body is made of polyvinyl chloride (pvc)plastics, and the onter cover is of cold-rolled steel plate with backing finish.

无污染，本机箱体为聚氯乙稀塑料，外壳采用不锈钢和冷板静电喷塑壳两种。