China Ground Source Energy Industry Group Ltd

Sino Energy Conservation International Limited is an investment holding company focused on the research, development, and promotion of geothermal energy for building heating applications in the People's Republic of China. It operates through four segments: Shallow Geothermal Energy, Air Conditioning/Shallow Geothermal Heat Pump, Property Investment and Development, and Securities Investment and Trading. Its activities also include planning and design, renewable energy supply, intelligent manufacturing, engineering construction, and operation and maintenance, as well as trading of air conditioning and shallow geothermal heat pump products, property investment, and securities trading. The company was formerly known as CHYY Development Group Limited and changed its name to Sino Energy Conservation International Limited in July 2026; it was incorporated in 2000 and is headquartered in Central, Hong Kong.