Group 1 - The core idea of the articles revolves around Hangzhou's initiative to build a "waste-free city" by promoting solid waste reduction and resource utilization through advanced technologies and community engagement [1][2][3][5] - Shenen Solid Waste Environmental Recycling Co., Ltd. in Fuyang District utilizes high-temperature melting technology to recycle metals from solid waste, achieving over 90% reduction in solid waste and producing 3.7 million tons of copper and over 170,000 tons of building materials in 2024 [1] - The city has established 197 "waste-free factories" and 116 green factories, along with 6 green low-carbon industrial parks, showcasing its commitment to industrial solid waste management [3] Group 2 - Geely Auto has implemented a battery recycling program that tests, disassembles, and remanufactures used batteries, achieving a recycling rate of over 97% for new vehicles [2] - The "Tiger Brother" waste management model in Yuhang District allows residents to schedule waste pickups via mobile apps, resulting in the collection of approximately 98,000 tons of household waste in 2024 and a reduction of 209,000 tons of carbon emissions [4] - Hangzhou's household waste recycling rate has reached 67.6%, with nearly 3,000 recycling points and 48 sorting centers established, demonstrating the effectiveness of the "Internet + recycling" model [4]