Anti-pollution valve

 Efficiently reduce stickiness to prolong usage;
 Reduce air flowing resistance to improve efficiency;
 The coatings can avoid dirt, low down noise efficiently;
 Can bear the erosion of various air as well as shocking and brushing bearing;
 The special coating tech can be applied in other machine parts of the similar kind.
 Besides above advantages, YUAN-OU valve can own more advantages according to specific requirement.

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