... face mask,earloop & tie-on; 9.0cm X 17cm;Low breathing resistance with high filtration efficiency.50pcs/box,2,000pcs/ctn. Surgical Face ... Masks3-Layer Face Mask,Elastic Ear ... design respirator produced from high filtrable,fluid resistant with a PFE 98% of 1.0 Micron ... electronics,beauty salon,etc. Surgical face mask