GB/T 32151.21-2024 Chinese PDF (GB/T32151.21-2024) GB/T 12959-2024 GB/T 45469-2025_Chinese: Microbeam analysis -

GB/T 45469-2025_Chinese: Microbeam analysis - Transmission electron microscopy - Preparation methods of ultrathin section of polymer composites (Chinese: 微束分析 透射电子显微术 聚合物复合材料超薄切片制备方法)

English versions: YY/T 0294

English versions: GB/T 31086-2025

English versions: GB/T 27636-2023

GB 21257-2024_Chinese: Norm of energy consumption per unit production of caustic soda

GB/T 32151.21-2024 Chinese PDF (GB/T32151.21-2024) GB/T 12959-2024 GB/T 45469-2025_Chinese: Microbeam analysis -GB T 32151. 21 2024_Chinese: Requirements of greenhouse gas emissions accounting and reporting Part 21: Foundry enterprise (Chinese: 21) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 32151. 21 2024