Core Viewpoint - The Ministry of Ecology and Environment and the State Administration for Market Regulation jointly released the "Solid Waste Identification Standard General Principles" (GB34330-2025), which will take effect on March 1, 2026, replacing the previous version from 2017. This revision aims to address the challenges posed by new industries and materials, ensuring effective solid waste management and supporting the goals of carbon neutrality and "waste-free cities" [2][3][4]. Group 1: Challenges and Responses - Accurate identification of solid waste is essential for implementing classification management, promoting resource utilization, and pollution prevention. The emergence of new industries and materials has made the sources and properties of solid waste increasingly complex [3]. - The revision responds to three main challenges: the need for accurate identification of by-products, environmental safety issues related to resource utilization, and new management topics arising from the development of new industries [4][5]. Group 2: Key Revisions - The revision clarifies two key relationships: the distinction between "by-products" and "sub-products," and the differentiation between "waste" and "old" materials. It also establishes specific conditions for the transformation of solid waste into "products" [5][6]. - The new standard emphasizes the need for quality standards and pollution control during production, methods for assessing secondary pollution, and rules for identifying situations of "ineffective utilization" and "exceeding market demand" [6]. Group 3: Support for "Waste-Free Cities" - The new standard provides precise criteria for the scientific management and resource utilization of solid waste, which will help standardize the recycling market and promote high-value resource utilization [7]. - The "Waste-Free Cities" initiative aims for 60% coverage by 2027 and full coverage by 2035, with the core principle being resource recycling while ensuring environmental safety [7][8]. - The Ministry of Ecology and Environment plans to enhance the implementation of the "Waste-Free Cities" initiative by addressing shortcomings and improving the levels of waste reduction, resource utilization, and harmlessness [8].