Group 1: Non-CO2 Greenhouse Gas Control Efforts - China is actively promoting the control of non-CO2 greenhouse gases, with methane and nitrous oxide being the second and third largest greenhouse gases globally, respectively [4] - The Ministry of Ecology and Environment has introduced a series of policies and actions, including the "Methane Emission Control Action Plan" and revised coalbed methane emission standards, to effectively manage emissions [4][5] - The country has established a national greenhouse gas emission factor database to support localized research on methane and sulfur hexafluoride emissions [5] Group 2: Technological Innovations and Achievements - The Soil Center of the Ministry of Ecology and Environment has developed drought-resistant rice cultivation techniques that achieve an average methane reduction rate of 97% and a comprehensive greenhouse effect reduction of 92% [1] - State Grid Corporation of China has developed a technology for the recovery and purification of sulfur hexafluoride, achieving a recovery rate of 97% [1] - Henan Shennong Carbon Reduction Technology Co., Ltd. has built a reduction device that achieves an annual reduction of 11.6 million tons of nitrous oxide equivalent, with a reduction rate of 98% [1] Group 3: Industry Collaboration and Future Directions - Various sectors, including government, enterprises, and research institutions, are collaborating to explore control practices for methane, nitrous oxide, and sulfur hexafluoride emissions [1][4] - The China Oil and Gas Methane Control Alliance aims to translate national policies into actionable corporate strategies, focusing on monitoring, reporting, and verification (MRV) systems [8] - Experts emphasize the need for further research on emission scenarios and cost-effectiveness analysis to support China's long-term low greenhouse gas emission development strategy [6]

Group 1 - China has announced the inclusion of non-CO2 greenhouse gases in its 2035 Nationally Determined Contributions (NDC), requiring significant domestic efforts and a favorable international environment to achieve this goal [1] - The NDC target aims for a 7%-10% reduction in total greenhouse gas emissions from peak levels by 2035, reflecting China's commitment to controlling non-CO2 greenhouse gas emissions as part of the Paris Agreement [1] - Effective control of non-CO2 greenhouse gas emissions is crucial for global climate change mitigation and is a key component of achieving the Paris Agreement goals [1] Group 2 - China's "dual carbon" policy has seen significant progress in controlling non-CO2 greenhouse gases, with the introduction of voluntary emission reduction trading mechanisms and other economic incentive policies [2] - Research support is needed for emission scenarios and cost-benefit analyses related to non-CO2 greenhouse gas reduction strategies, particularly for methane [2] - Methane, nitrous oxide, and sulfur hexafluoride have greenhouse effects that are significantly more potent than CO2, making their reduction essential for limiting global warming [2] Group 3 - In agriculture, the implementation of water-saving drought-resistant rice cultivation has achieved an average methane reduction rate of 97%, with a comprehensive greenhouse effect reduction of up to 92% [3] - The China Oil and Gas Methane Emission Control Alliance has expanded to 10 member companies, making significant advancements in methane control strategies and monitoring systems over the past four years [3] Group 4 - The Pingmei Shenma Group has developed an industrial nitrous oxide reduction facility, achieving a CO2 equivalent reduction of 11.6 million tons annually, with a reduction rate of 98% [4] - State Grid Corporation has showcased its technology for controlling sulfur hexafluoride emissions, achieving a recovery rate of 97% and recycling over 2,600 tons of sulfur hexafluoride by 2024 [4] - Hitachi Energy has introduced a digital management system for the entire lifecycle of sulfur hexafluoride, exploring practices based on alternative gas technologies [4]