... clinical respirator /or mask cloth, etc... ZF melt-blown respiratory fabric:Superfine fiber filter material produced by our advanced technology is ... , and dust proof respirator. Products coincide GB6223-86Udc614.89 42CFR84 (U.S.) En149 (EU). N95, N99, N100, 91, 92,93, meet different ... .699.883.2ZF-MA120FFP3121.099.974 ZF melt-blown respiratory fabric