According to the data, Shanghai Rail Transit1Line 4 Development Co., Ltd. was established on 20 14-04-02, and its business scope includes the investment, construction, operation and management of Shanghai Rail Transit1Line 4 project, the comprehensive development of stations along the line, the maintenance and technical consultation of electromechanical equipment, services, property management, and parking lot management. Projects that must be approved according to law can only carry out business activities after being approved by the relevant departments.