Beijing & Car Line Information Technology Co Ltd, is an innovative automotive industry Internet big data company. The company was founded on July 16, 2014 . The company has developed and constructed CADA Cloud Numerical Gathering, a big data platform for monitoring the quality of China's automobile after-sales service, and CADA Lemon Check, a used car information service platform.

The China Automotive After-sales Service Quality Monitoring Big Data Platform was developed and constructed under the guidance of and with the participation of the China Automobile Circulation Association (CACA) in accordance with the "Automotive After-sales Service Quality Enhancement" initiative carried out nationwide by the former General Office of the State General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ). The platform collects massive consumer experience data through the automobile consumer 360 insight system, and truly reflects the results of consumer experience. This is the first stage of the domestic automotive service quality real-time monitoring and analysis of the Internet data platform.