The inlet of the product is equipped with ash diversion device，which equate wind and protect the filter .The filter unit is designed as vertical type, which make  the ash cleaning more thoroughly. The filtration accuracy is up to 99.9%; Balance grade ≤4.0 (National standard), which with stable performance; The operation noise is as low as 75dB; With PLC automatic control system ,it  could be set according to different operating conditions;The application of our machine is in laser, plasma cutting, welding, grinding and other conditions.