... -size:as customer's request Disposable non woven mask for chemical protective Material:100% PPspunbond non woven fabricWeight : 9---30g/m2Colors: ... pink ,etc-Feature:1. Light: Polypropylene is the main raw material; specific gravity is 0.9, is only third five, ... other chemical composition, stable, non-toxic, no smell, safe for sensitive skin.5. Anti-bacterial, anti-chemical: Polypropylene is blunt ...