Home / Standards / GB/T 6849-2025 GB/T 6849-2025 Active Imaging materials—Photographic films and papers—Wedge test for brittleness 影像材料 照相胶片和相纸 脆性楔式试验方法 Standard Type GBT ICS 37.040.20 CCS G81 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