Home / Standards / GB/T 45900-2025 GB/T 45900-2025 Active Test method of buoyancy material and modules properties for manned submersible 载人潜水器用浮力材料和构件性能测试方法 Standard Type GBT ICS 47.020.05 CCS U 05 Status 现行 Issue Date 2025-06-30 Implementation 2026-01-01 Responsible Dept 国家标准委 Drafting Unit N/A