... multiple work sites 4.BFE>95% 5.Fast delivery 3m industrial face mask Features:Material: Nonwoven fabric3ply face mask ... advantages: good air permeablility , high rate of dust-proof,filter bacterial.Apply to: Suitable for use in Electroinc, micro- ... electroincs, LCD hospitals, laboratories, industry, and agricultureStandard Color: Blue, Green, White ...