Home / Standards / GB/T 33639-2025 GB/T 33639-2025 Active CNC hydraulic punching and drilling composite machines 数控液压冲钻复合机 Standard Type GBT ICS 25.120.10 CCS J62 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A