Dust Mask,PP Dust Respirator 1)15 years manufacturer 2 ... dust and mist 4)dust mask Dust Mask,PP Dust Respirator1)15 years manufacturer2)certificated by ISO9001, ... EN146833)Anti dust and mist4)PP meltblown It is widely used in medical-health departments ... Hindrance on visual angle:< = 3 degreeWeight : 100g,120g,140g,160g,180g,200g,220g,240g Packing: a. 50pcs/inner box ...