... ,Color:Blue,Green,White Certification:European CE 3-ply Non-Woven facial mask:non woven face mask:2-ply or 3-ply ... face mask:3-ply face mask: MaterialHigh-quality non-wovenCraftsone-ply,two-ply,three-ply,four-ply,first-ply: ... ;UsageUsed in medical, food hygiene, electronics, dust-free clean rooms, public health facilities, or other