GB/T 5686.5-2023 Chinese PDF (GB/T5686.5-2023) GB/T 45284.4-2025 GB/T 12357

GB/T 12357

English versions: GB/T 42257-2022

8-2025_Chinese: Norm of water intake for industry - Part 8: Synthetic ammonia (Chinese: 工业用水定额 第8部分：合成氨)

4-2024_Chinese: Chemical analysis methods of mixed rare earth oxide of ion-absorption rare earth ore - Part 4: Determination of iron trioxide content - Inductively coupled plasma atomic emission spectrometry (Chinese: 离子型稀土矿混合稀土氧化物化学分析方法 第4部分：三氧化二铁含量的测定 电感耦合等离子体发射光谱法)

GB/T 19652-2023_Chinese: Discharge lamps (excluding fluorescent lamps) - Safety specifications (Chinese: 放电灯（荧光灯除外） 安全规范)

GB/T 5686.5-2023 Chinese PDF (GB/T5686.5-2023) GB/T 45284.4-2025 GB/T 12357GB T 5686. 5 2023_Chinese: Ferromanganese, ferromanganese silicon, nitrogen bearing ferromanganese and manganese metal Determination of carbon content The Infrared absorption method, the gasometric method, the gravimetric method and the coulometric method (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 5686. 5 2023