... EN ISO 13485/2003 and CE certificate2.3-ply face mask, pp+filter paper+pp BFE≥95% high elastic circular rubber welding ... .3.It can prevent from cutting off wee dust,absorbing industrial waste ... /box,40bags/carton,2000pcs/carton.Non-woven Mask,disposable mask,medical maskIt can prevent bacteria,dust entering the oral cavity and get rid ...