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 VADSYS�s abundantly line of 1~128 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 People�s Republic of China. VADSYS�s markets covered Germany, Finland, Israel, Russia, Thailand, Hong Kong, Taiwan, and other countries and regions.</p>