The company is the first listed company in the national infrastructure sector. The company provides “planning consulting, investment, design, construction and operation” integrated services for the entire industry chain for cities around the world. The company is fully committed to the new vision of an “urban construction and operation ecosystem resource integrator”. The company is mainly engaged in the design, construction, investment, traditional and intelligent operation and maintenance of urban infrastructure such as tunnels, rail transit, roads and bridges, gas and new energy, water, underground space, etc., and also includes a wide range of shield (including digital shields) equipment manufacturing business in recent years. Get involved Financial services such as industrial funds, financial leasing, factoring, etc., as well as emerging digital information businesses related to smart cities and intelligent transportation. The company's main products are infrastructure construction business, infrastructure investment business, urban operation and maintenance business, digital information business, equipment manufacturing business, financial leasing and factoring business. Corporate honors: As of 2021, Tunnel Co., Ltd. has 2 national R&D platforms, including the “National Engineering Research Center” and the “National Enterprise Technology Center”, 7 municipal technology centers, 6 municipal engineering centers, and 2 post-doctoral studios, and also has 12 high-tech enterprises. The business covers many fields such as transportation, construction and real estate, water conservancy, energy, underground space, major equipment, green materials, digital business, and construction finance. In 2021, the company obtained a total of 1985 authorized patents.