GB/T 13539.7-2024 Chinese PDF (GB/T13539.7-2024) GB/T 26882.2-2024 3-2025_Chinese: Non-destructive testing - Ultrasonic

3-2025_Chinese: Non-destructive testing - Ultrasonic testing block - Part 3: Calibration block for curved surface (Chinese: 无损检测 超声检测试块 第3部分：曲面检测标准试块)

GB 45246-2025_Chinese: Norm of energy consumption per unit production of main wood-based panel products (Chinese: 人造板类主要产品单位产品能源消耗限额)

2-2024_Chinese: Non-destructive testing - Magnetic particle testing - Part 2: Detection media (Chinese: 无损检测 磁粉检测 第2部分：检测介质)

4-2024_Chinese: Information technology - Security techniques - Entity authentication - Part 4: Mechanisms using a cryptographic check function (Chinese: 信息技术 安全技术 实体鉴别 第4部分：采用密码校验函数的机制)

4-2023_Chinese: Buried polyethylene(PE) piping systems for the supply of gaseous fuels - Part 4: Valves (Chinese: 燃气用埋地聚乙烯（PE）管道系统 第4部分：阀门)

GB/T 13539.7-2024 Chinese PDF (GB/T13539.7-2024) GB/T 26882.2-2024 3-2025_Chinese: Non-destructive testing - UltrasonicGB T 13539. 7 2024_Chinese: Low voltage fuses Part 7: Supplementary requirements for fuse links for the protection of batteries and battery systems (Chinese: 7) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13539. 7 2024