... net which is made of fiberglass, can filtrate small particle with the size less than 0.0001mm, such as dust , bacillus ... machine. Micro computer control, four-lay filter and over oxygen device, with high level, mid-level and low level wind, timing can ... be set 1hour,2hour,4hour and 8hour, Four-lay filter with triple purify effect. The surface color can be customized.?Configuration ...