Product Description : 1. The first layer: Spunbond cloth, filter the micron dust. 2. The second layer: To filter industrial pollutants, automobile exhaust gas, second-hand smoke pollen allergies. 3. The third layer: Activated carbon cloth, benzene, and a smaller micron dust filtering function. 4. The fourth layer: Density filter, smaller material. Price of product ( USD price or FOB price) : $1.7 / pcs Product Origin : China Key Specifications/Special Features : 5 PLY White color CE, FDA certification Material: Non-woven fabric Protection class: KN95=N95=FFP2 TT/ Bank-Wire transfer Minimum Order Size and Packaging details : MOQ 2000 pcs