... can capture granules larger than 5μm,with the total filtering rate 98%.heating system1,Italian RG3S diesel burner,16,0000calaries ... 7minutes.2,SUS304 stainless steel heat exchanger,argon arc welding,with heating-exchanging rate 90%.3,th fuel tank is 50L, ... alarm,timer.environmental systemmuti-layers of fiberglass filter and shelf with active carbon,ensuring a high level of environment-friendliness. ...