China Everbright International Limited, an investment holding company, provides environmental solutions in the People's Republic of China, Germany, Poland, and Vietnam. The company operates through four segments: Environmental Energy Project Construction and Operation; Environmental Water Project Construction and Operation; Greentech Project Construction and Operation; and Others. The Environmental Energy Project Construction and Operation segment constructs and operates waste-to-energy power plants, methane-to-energy plants, sludge treatment and disposal projects, and food waste treatment projects. The Environmental Water Project Construction and Operation segment constructs, upgrades, and operates waste-water treatment plants, reusable water treatment plants, a surface water treatment plant, waste water source heat pump projects, and water environment management projects. The Greentech Project Construction and Operation segment constructs and operates integrated biomass utilization, hazardous waste treatment, solar energy, and wind power projects. The Others segment conducts environmental protection technology research and development projects; provides environmental related technological services; designs environmental protection projects, and manufactures and sells environmental protection project equipment. This segment also operates waste treatment plant and landfill site. The company also provides construction management services. In addition, it constructs, operates, maintains, researches, and develops biomass direct combustion power generation projects and sponge city. Further, China Everbright International Limited engages in the collection and treatment of municipal wastes through mechanical and biological technology; and river-basin ecological restoration project. The company is headquartered in Hong Kong, Hong Kong. China Everbright International Limited is a subsidiary of Guildford Limited.