Home / Standards / GB/T 46324-2025 GB/T 46324-2025 Active Cemented carbide products for ultra precision optical dies 超精密光学模具用硬质合金制品 Standard Type GBT ICS 77.160 CCS H72 Status 现行 Issue Date 2025-10-05 Implementation 2026-05-01 Responsible Dept 中国有色金属工业协会 Drafting Unit N/A