... ISO9001,EN14683 3)Anti dust and mist 4)Polyester Dust Mask,Polyester Respirator1)15 years manufacturer2)certificated by ISO9001,EN146833) ... uncomfortable effects of cold air. B. The material is polyester. C. Color: white, blue, red D. Weight: 200g,250g,300g E. ... Packing: 50pcs/inner box,1000pcs/ctn White Dust Mask,Dust Respirator,Polyester Respirator ...