non-woven face mask, various type 2-ply, 3-ply, 4-ply, ... and tie-on size: 14x7cm, 15x9cm, 16x9cm, 17.5x9.5cm non-woven face mask, 2-ply, 3-ply, 4-ply Sanitation and ... protective products for the medical enterprise, the chemical enterprise, the painting workshop, the leather industry, and the environmental sanitation unit. we ...