... face mask, various type 2-ply, 3-ply, 4-ply, earloop and tie-on size: 14x7cm, 15x9cm, 16x9cm, 17.5x9.5cm non-woven face mask ... , 2-ply, 3-ply, 4-ply Sanitation and quality in accordance with CE, ISO9001, ISO13485 ... enterprise, the chemical enterprise, the painting workshop, the leather industry, and the environmental sanitation unit. we also can pack it acorrding ...