How many communication engineering enterprises are there in China?

There are more than 200 companies in China, including Shanghai Beilian Technology Co., Ltd., Beijing Master Planning and Design Institute Co., Ltd., Hangzhou Optimization Technology Co., Ltd., ZTE Corporation, Nanjing Stein's office, Shanghai Yinda Technology Co., Ltd., Nanjing Gedian System Co., Ltd., Beijing Gaoxinda, Huayou Communication Design Institute and Tianjin Tongpu Network, all of which cooperate with Motorola Engineering College, and this school has a good reputation, hehe.