includes hepa (high efficiency) filter and gas filter. the hepa cleans the gas and powders filtering from the pre-filter and then carry them to the gas filter. which with the carbon and other chemical combination, filters off the deleterious substance and then outputs the clean air. . the fume extractors...
includes hepa (high efficiency) filter and gas filter. the hepa cleans the gas and powders filtering from the pre-filter and then carry them to the gas filter. which with the carbon and other chemical combination, filters off the deleterious substance and then outputs the clean air. . the fume extractors...