Product Specification: 17.5cm X 9.5cm
Period of Validity: 2 years
Product standard: GB/T 32610-2016
Main Materials:
 Interior & Exterior: Non woven Fabric
 Inter layer: Melt-blown Non woven Fabric
Bacterial Filtration Efficiency >= 95%
Quantity: 10/20/50 pieces per a pack
Packing: Vacuum Plastic Bag
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