Home / Standards / GB/T 5211.9-2025 GB/T 5211.9-2025 Active General methods of test for pigments and extenders—Part 9:Comparision of resistance to light of coloured pigments of similar types 颜料和体质颜料通用试验方法 第9部分: 相同类型着色颜料耐光性的比较 Standard Type GBT ICS 87.060.10 CCS G53 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A