Dong Guan YanSheng Electronic Co., Ltd. is a manufacture enterprise specializing in LED-ARRAY IR light sources products, of which the head office is Hong Kong YSST. Company Ltd.With several R&D sections in Germany, Israel and ShenZhen in China, our marketing centre is located in ShenZhen, and the factory in DongGuan.  The company in China takes the management and service conception from the head office, with the support of powerful technology and fund as well as resource globalization, and is dedicated in meeting the requirements of suppliers of global security monitor products about infra-red night-vision system.