non-woven with valve abric chemical safety respirator .Low respiratory resistence .High filtrability .Material:non-woven Face mask/Dust mask/ non-woven with valve dust mask .Low respiratory resistence .High filtrability.Material:non-woven fabric.Style:ear-loop.Packaging:20pcs in color box,200pcs/ctn,carton size:65*27*42cm G.W/N.W:8/6KGS.Application: Suited to textile,mining,construction, ...