... fineness; 4.fully enclosed structure; 5.no dust overflow scattered. Air flow sieve is the high-precision screening equipment of fine powder ... screen no load, long life, has a wide range of small degree, fully enclosed structure, no dust overflow scattered, low energy ... .51250QS-100QS-100A8000.996010005.51650QS-150B1602.87801500112100QS-200QS-200A20003.93502000152500 Air Flow Sieving Machine