Shanghai Tunnel Engineering. 

Shanghai Tunnel Engineering Co., Ltd. engages in the consulting, planning, design, investment, construction, and operation of urban infrastructure in China, Hong Kong, India, Singapore, Macau, and internationally. It undertakes tunnel, rail transit, road and bridge, gas and new energy, water utilities and environment, underground space, urban public space, and other projects; and provides operation and maintenance services. The company also offers prefabricated civil and commercial building products; PC pre-cast components; and digital solutions, software products, and systematic professional services in the field of infrastructure. In addition, it researches, develops, and sells shield tunneling machines; and industrial funds, financial leasing, and factoring services. The company was founded in 1965 and is based in Shanghai, China.