Home / Standards / GB/T 1646-2020 GB/T 1646-2020 Active 2-Naphthol 2-萘酚 Standard Type GBT ICS 71.100.01;87.060.10 CCS G56 Status 现行 Issue Date 2020-11-19 Implementation 2021-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A