Home / Standards / GB/T 6702-2022 GB/T 6702-2022 Active Naphthalene sulphuric acid test 萘酸洗比色试验方法 Standard Type GBT ICS 71.080 CCS G18 Status 现行 Issue Date 2022-07-11 Implementation 2022-11-01 Responsible Dept 国家标准委 Drafting Unit N/A