Dongguan Yansheng Electronic Co.,Ltd. has been established since 1999, of which the marketing center is located at the prosperous Huaqiang Northern commercial area of Shenzhen. In addition, the factory is situated in Tangxia Town of Dongguan City. With most advanced automatic manufature and test equipments, we are always dedicated in developing, producing and offering superexerllent security monitor products for the consumers. The technology of IR Light source LED ARRAY, which was researched and developed by ourselves independently, has reached at international leading level through our experience for many years. Therefore, the product quality keeps ahead in the relevant field.