... science,pleasing in appearance,reliable operation, easy to use,flexible operation.Characteristics:1.All-closed fan ... 5.Dust collection box is easy to operate,easy to clean gray back.6.Products A,B,J ... box→B-type dust collection box,directly connected to the hopper,hopper,belt transport equipment→J ... purified through the role of the centrifugal force back to the workshop,which reduce heat loss.Clean ...