长春燃气：公司所属的子公司长春燃气热力研究设计院曾参与过提氦工程项目建设，且项目投产后运行稳定

Core Viewpoint - The company is exploring new areas in the natural gas industry, specifically in hydrogen blending and helium extraction, and is currently in the preparatory stages without formal implementation [2]. Group 1: Hydrogen and Helium Extraction - The company has indicated that pipeline hydrogen transportation and helium extraction are emerging fields within the natural gas sector [2]. - The company’s subsidiary, Changchun Gas Thermal Research and Design Institute, has previously participated in helium extraction project construction, which has operated stably post-launch [2]. - The company has also been involved in the development of industry standards for hydrogen blending over the past two years, indicating a solid technical and talent reserve in this area [2].