Conforms to EN149FFP2S standards with CE marking. To resist acid vapor, such as H2S, SO2, H2, N2 and micron dust. Special 4-ply pleated design, high filtration and static electricity material, high efficient active carbon material to absorb. Suited to paper manufacturing, pesticide, chemical, powder generating, electronic, coating, metal annealing...Etc. Environments. Company: Agang Business Corporation