Shenzhen CTVHD Technology Co., Ltd. devotes to the research and development, production, sales and service of videos & teaching touch equipment products. Products: all series of infrared touch screens and CCD optical touch screens, 18.5 - 108 inch computer TV all-in-one PCs and interactive electronic whiteboards, 15 - 82 inch LCD and plasma advertising machines (a single version and advertising machine, wall hung, online console, vertical type screen, horizontal type screen or customized ...