Shanghai Yo-Zo Electronic Technology Co. Ltd, located in Shanghai, China. Founded in 2006, is a research and development, manufacture and sale as a whole security enterprise. Products involve alarm system, infrared detector, perimeter security system, smoke alarm, gas leak alarm and etc. Now, the company has established 21 branches in 26 provinces and cities nationwide. With the regional sales and services networks, we can ensure the effective, timely, and continuing professional technique support and service.