... the SAW touchscreenTechnology: Surface Acoustic WaveSize: 7inch, 4:3 (from 7"-47"are available)Feature: Standard (anti-glare,anti-dust and ... not affect glass, such as Acetone, Toluene, Methyl ethyl ketone, Isopropyl alcohol, Methyl alcohol, Ethyl acetate, Ammonia-based glass cleaners, Gasoline, Kerosene ... , please contact our company for the information up to date. 7" SAW Touch panel