INTECH Electromagnetic Interactive Whiteboard is a new Interactive product series designed by INTECH R& D Dept... Advantages Achieved from INTECH Electromagnetic IWB Classroom Tough Product: The electromagnetic signal passes through any non-metallic material, so it is possible to use a very hard Formica surface. The surface material is well suited for harsh environments. Shock and Vibration Resistance: The wire grid is bonded ( glued) in place so that the wire grid maintains its precise position even if the board is submitted to extreme shock and vibration. There are no moving parts to be damaged. High Resolution: Write as small as possible - the 1000 lpi resolution insures that details will be visible on the printed copy. Fast Response: The electromagnetic technology is linear; Decoding the signal is relatively simple. Low Cost: INTECH Electromagnetic IWB has lower cost than Infrared IWB and the same products from other suppliers, which could meet the customers who require cost-effective products. leader manufacture in china with own tech skill high quality favorable price good profit for agent and distributor long lifespan with steady performance more info pls check the link below: http: / / www.cnintech.com/ eiwhiteboard.html