Home / Standards / GB/T 12823.3-2025 GB/T 12823.3-2025 Active Photography and graphic technology—Density measurements—Part 3:Spectral conditions 摄影和图形技术 密度测量 第3部分:光谱条件 Standard Type GBT ICS 37.040.01 CCS G80 Status 现行 Issue Date 2025-08-01 Implementation 2026-02-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A