39 years experiences focusing on energy-saving technology of central air-conditioning, utilize and develop of renewable energy and healthy operation of public health’s air-conditioning and ventilation for 39 years One-stop technical service contractor for China well-known green buildings and green factories’ energy-saving solutions Lead technical service contractor that provide integrated solutions for public health’s air conditioning & ventilation retrofit standardization Provides clients with “intimate butler” energy trusteeship services on management, operation and consumption Investment & construct on cooling, heating and hot water supplying management center, to make our clients use air conditioning, heating and hot water service as convenient as use electricity, natural gas and water.