免费 无码 国产优嘿在线观看_91视频国产_官方助你国产高清亚洲精品视bt天堂频_亚洲精品无码专区久久平台_国产亚洲欧洲997久久综合


Vacuum Pump NEWS

Collect industry news, focus on hot information, update market trends

Reciprocating vacuum pump equipment and environmental requirements

(1) The pump body is clean and there is no dust and oil on the outside.
(2) There is no water, waste liquid or other debris on the surface and surrounding of the base.
(3) There must be no leakage at the valve and fittings.
(4) The leakage of the packing seal does not exceed the regulations.

2019/09/04 10:29:23 3149 Click


Related Documents Vacuum Pump Related Documents

Quality first, service first as the goal, to provide customers with high-quality products