Shandong Expressway Co. Ltd is mainly engaged in the investment, operation, management and maintenance of highways, bridges and tunnels. Its core business is the operation and management of highways and bridges in Shandong Province including Jinan-Qingdao Expressway, the Tai mountain-Qufu Class 1 Highway, the Jinan Yellow River Bridge, the Binzhou Yellow River Bridge, the Pingyin Yellow River Bridge and the Jinan No.2 Yellow River Bridge. In addition, the company is involved in certain other industries such as oil and gas services, property management and real estate development. It jointly established Shandong Runyuan Highway Oil and Gas Management Company with China Petroleum & Chemical Corporation.