Shanghai Tunnel Engineering Co., Ltd. provides consulting, planning, design, investment, construction, and operation services for urban infrastructure in China, Hong Kong, India, Singapore, Macau, and other international markets. Its projects include tunnels, rail transit, roads and bridges, gas and new energy, water and environment, underground space, and urban public spaces, along with operation and maintenance services. The company also supplies prefabricated civil and commercial building products, PC pre-cast components, and digital solutions, software products, and systematic professional services for infrastructure. In addition, it researches, develops, and sells shield tunneling machines, and offers industrial funds, financial leasing, and factoring services. Founded in 1965, the company is based in Shanghai, China.