Home / Standards / GB/T 47317-2026 GB/T 47317-2026 Upcoming Marine methanol fuel engine 船用甲醇燃料发动机 Standard Type GBT ICS 47.020.20 CCS U 44 Status 即将实施 Issue Date 2026-03-31 Implementation 2026-07-01 Responsible Dept 国家标准委 Drafting Unit N/A