Powder coating paint dust spill is its normal state, good equipment is expensive, the design is reasonable, the safety margin is large, the dust is not serious; the cheap equipment is almost no design, plus maintenance can not keep up, spare parts Recycling is not timely, the use of powder particle size and material is not good, catching up with production progress, and then encountering high temperature and high humidity, etc., the recovery effect is more and more unsatisfactory, can not bea