Core Viewpoint - The article discusses the need for revising and updating national standards for compressed natural gas (CNG) vehicle refueling interfaces to align with international standards and support the development of China's gas vehicle industry [4][5]. Group 1: National Standards for CNG Refueling Interfaces - The National Technical Committee for Automotive Standardization has released a draft for the national standard on CNG refueling interfaces, seeking public opinions until May 22, 2026 [2]. - The draft includes nine chapters covering scope, normative references, terminology, technical requirements, testing methods, inspection rules, labeling, packaging, transportation, storage, and factory documents [2]. - The current standard, GB/T 18363-2017, has been in place for eight years and is considered outdated, hindering the development of China's gas vehicle industry [4]. Group 2: Current Status of Gas Vehicles in China - China is the largest producer and user of gas vehicles, with CNG and LNG vehicle ownership consistently ranking first globally from 2015 to 2023 [4]. - CNG vehicles account for over 20% of the global total, while LNG vehicles represent more than 98% of the global LNG vehicle ownership [4]. - The number of national standards for CNG and LNG vehicles is limited, with only 18 and 10 standards respectively, many of which are outdated and do not meet international ISO standards [4]. Group 3: Importance of Standard Revision - The revision of the CNG refueling interface standard is crucial for narrowing the gap with advanced international standards and enhancing the quality of gas vehicles in China [5]. - The updated standards will facilitate the development of the gas vehicle industry, improve product quality, and support the "Belt and Road" initiative and the dual circulation strategy [5]. - The industry has called for an upgrade of the pressure rating for CNG vehicles from 20MPa to 35MPa, necessitating corresponding improvements in the supply chain [4]. Group 4: Other Relevant Standards - The article also mentions the public consultation for the mandatory national standard for vehicle manufacturing certificates and the standard for the dimensions, axle loads, and weight limits of vehicles, both of which are set to close for comments on May 26, 2026 [10][19]. - The revisions aim to address the rapid evolution of the automotive industry, particularly in the context of electric and intelligent connected vehicles, ensuring that standards remain relevant and comprehensive [12][20].