In 2015, Chongqing Circle Line was formally established as a national rail transit connectivity demonstration project. As the signal system speed sensor supplier and radar speed sensor supplier of Chongqing Circle Line, the company successfully realized the engineering application of CBTC.

Due to the positive leading role of Chongqing Connectivity Demonstration Project, Hohhot, Qingdao, Guiyang and other cities are also vigorously promoting the use of rail transit connectivity DF16 photoelectric speed sensor and radar speed sensor.