●1. Composition of our kn95 mask: non-woven fabric, melt-blown fabric   ●2. Structure of our kn95 mask: outer layer hard non-woven (50gsm) second layer melt-blown (export quality)  third layer soft non-woven (25gsm)  fourth melt-blown (export quality) fifth inner layer soft non-woven (30gsm)   ●3. Package details of our kn95 mask: 10pc/box   ●4. Certificates of our kn95 mask: ce declaration fda registration