VADSYS Digital System Technologies Co., Ltd (VADSYS) takes the responsibility to their customer in security and television industry, to satisfy with their request of superior quality and higher reliability optical transmitter & receiver. VADSYS is one of the companies which have the ability to provide full line of superior quality and cost-effectively optical transmission equipments in China. Ascribe to VADSYSs abundantly line of 1128 channel composite video optical transmitter & receiver, DVI optical transmitter & receiver, SDI/ASI optical transmitter & receiver, HD-SDI optical transmitter & receiver, RGB optical transmitter & receiver, VGA optical transmitter & receiver, Our large number of productions have been reliably applied to city security project, Intelligent Transportation Systems<ITS>, espressway, Airport, Mine, Railway, Bank, etc. VADSYS certificated with ISO9001 quality management system by SGS, and passed the test of both Ministry of Public Security and Public Communication of the Peoples Republic of China. VADSYSs markets covered Germany, Finland, Israel, Russia, Thailand, Hong Kong, Taiwan, and other countries and regions.