GB/T 4074.6-2024 Chinese PDF (GB/T4074.6-2024) GB/T 20552-2023 English versions: GB/T 18385-2024

English versions: GB/T 18385-2024

English versions: GB/T 45330-2025

GB/T 45435-2025_Chinese: Technical requirements and test methods of BeiDou airborneequipment for aviation supplemental navigation (Chinese: 航空辅助导航北斗机载设备技术要求和测试方法)

use and maintenance of detectors for flammable gases and oxygen (Chinese: 爆炸性环境用气体探测器 第2部分：可燃气体和氧气探测器的选型、安装、使用和维护)

GB/T 45423-2025_Chinese: Data element for meteorology - General (Chinese: 气象数据元 总则)

GB/T 4074.6-2024 Chinese PDF (GB/T4074.6-2024) GB/T 20552-2023 English versions: GB/T 18385-2024GB T 4074. 6 2024_Chinese: Test methods of winding wires Part 6: Thermal properties (Chinese: 6) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 4074. 6 2024