With over 20 years of experience in line of wired/wireless alarm system, surveillance system and video doorphone system, Shenzhen Security Group Corp., Ltd , has already become the biggest manufacturer of safe and security products in China. At present the Group consists of 7 sole subsidiaries including Shenzhen Weierying Electron Co.,Ltd, Shenzhen Jinhuicong Technology Co., Ltd and Shenzhen Jinfuxing Co., Ltd etc.