Home / Standards / GB/T 47270-2026 GB/T 47270-2026 Upcoming Determination of nitrogen content of coking benzole products 焦化苯类产品氮含量的测定 Standard Type GBT ICS 71.080.15 CCS G17 Status 即将实施 Issue Date 2026-03-31 Implementation 2026-10-01 Responsible Dept 国家标准委 Drafting Unit N/A