Vandaproof touch screen (17" SAW ) provide excellent impact-proof,vanda-proof performance,and special be used in public place Touch Screen Dust proof&Waterproof (17" SAW )*This type of touch screen uses 4mm,6mm tempered glass,which provide excellent impact-proof,vanda-proof performance, and could be used in public environments where vandalism is a concern or in unsupervised or industrial ...