... ,flexible,economic 2.convert any board into touch screen 3.free size from 30" to 100" 4.ultrasonic&infrare,CE&ROHS Remolding ... , wall, LCD, Plasma into touch screen. Advantage: smaller, just pocket size, so for distributor and resellers, our EduBoard P-series products ... Vista, XP, 2003, or 2000, upgrade is availblemaximum projected screenfree size from 30" to 100"working temperature-10°C~50°C ...