Home / Standards / GB/T 46649-2025 GB/T 46649-2025 Active Portable chain-saw front hand-guard—Dimensions and clearances 便携式链锯前护手器 尺寸和空隙 Standard Type GBT ICS 65.060.80 CCS B 95 Status 现行 Issue Date 2025-10-31 Implementation 2026-05-01 Responsible Dept 国家林草局 Drafting Unit N/A