Group 1: Innovative Energy Solutions - The "River Water Air Conditioning" system in Chongqing utilizes the natural temperature regulation properties of the Yangtze and Jialing rivers, providing a sustainable cooling and heating solution for buildings [1] - This system can save approximately 52,000 kW of electricity capacity annually and conserve 1.98 million cubic meters of water, while reducing carbon dioxide emissions by about 60,000 tons each year [1] Group 2: Waste Management and Recycling - The cement factory in Chongqing employs a technology that transforms organic waste into fertilizers, combustible materials into fuels, and solid waste into raw materials, integrating these into the cement production process [2][4] - The Chongqing Conch Cement Company has a daily capacity to process 200 tons of municipal waste, which not only addresses environmental issues in the Three Gorges area but also contributes 4% of the heat needed for cement production [4] Group 3: Culinary Waste Utilization - In Chongqing, waste cooking oil from the restaurant industry is processed through sorting and dehydration, then further refined into industrial oils for use in aviation and industrial products [5] Group 4: Circular Economy Initiatives - Chongqing Midea Refrigeration Equipment Co., Ltd. incorporates a circular economy approach in its production processes, reusing excess heat, oxygen, and pressure, and is developing a green circular industrial park to support the transformation of the home appliance recycling industry [5]