Marerial: 4ply (outer non-woven, middle activated carbon filter cloth and a mix of polypropylene melt spray cloth) Observe(100%pp spun bond) 20g/m2 Inner(melt blown filter) 25g/m2 Active carbon 40g/m2 Reveres(100%pp spon bond) 26/m2 Filter grade : bfe:99.5% pfe:99.5% Properties: Ring type: ears hang Hanging ring materials: op Article nose: article aluminum Other weight , material is available Size : 175*95mm+/5mm for adult use 145*95mm+/5mm for children use Packing : 50pcs/innner box , 40boxes/ctn Carton size:52*38*44cm C.W.:9kgs/ctn n.W.:8kgs Capability : 1.Disposable, soft, light weight, comfortable and odorless, without glass fibers 2.Hypoallergenic, very low resistance to breathing, nose bar adaptable, high filtration capacity 3.Pefect fitting, non-irritating to skin, and permit air passage 4. The production and packaging in a controlled environment Sanitation and quality in accordance with the ce, fda and iso9001 standard, Customer's logos can printed on box. It can customize according to customer's standard size Application : Active carbon face masks are used in clean room, food preparation and industrial environments, non-woven activatied carbon face can effectively remove benzene, anmobia, formaldehyde and other harmful gases and unpleased smell, stench, to protect human health, are widely used in laborarory, public health institution, chemical, reseach institution, pharmaceutical, paint, fertilizer, pesticides, mining and other heavy polluting industries.Anti h1n1 flu, anti swine flu, anti sars etc. 50pcs/innner box , 40boxes/ctn Carton size:52*38*44cm C.W.:9kgs/ctn n.W.:8kgs