project background: british dulwish college is located in the biyun international community of jinqiao, pudong. the whole project was divided into two phases. the first project rebuilt the former weak current system of the school, and the second worked for the four floors of new campus. the area of the school is 50,000 square meters......

Ewon information technology co. ltd. is a high-tech enterprise whose business scope includes voice systems, network projects, system integration, door access control systems, and security protection systems broadcast systems, etc. ……
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