4-wire touch panel: 1 High Quality 2 0.4mm thickness 3 Flexible Film ... Film 4 Not Easy to be broken 4-wire touch panel with controller advantage:Good quality, competitive price, light weight, thin thicknessinstallation ... : -20 oC - +70 oCHumidity: >90%Application Occasion: GPS (global position system) equipment, mobile phone, PDA, FHKD(VMIC, CRESUN), learning laptop, Point ...