Here, for example, Shenzhen Changlong Railway Electronic Engineering Co., Ltd. was established in 1985. It is specialized in railway signal and communication security equipment research and development, production of professional manufacturers; set up offices and maintenance center in Beijing, Tianjin, Shijiazhuang, Taiyuan, Datong, Hohhot, Harbin, Kunming and other places.
Here, for example, Shenzhen Changlong Railway Electronic Engineering Co., Ltd. was established in 1985. It is specialized in railway signal and communication security equipment research and development, production of professional manufacturers; set up offices and maintenance center in Beijing, Tianjin, Shijiazhuang, Taiyuan, Datong, Hohhot, Harbin, Kunming and other places.
Here, for example, Shenzhen Changlong Railway Electronic Engineering Co., Ltd. was established in 1985. It is specialized in railway signal and communication security equipment research and development, production of professional manufacturers; set up offices and maintenance center in Beijing, Tianjin, Shijiazhuang, Taiyuan, Datong, Hohhot, Harbin, Kunming and other places.
