GB/T 13748.20-2024 Chinese PDF (GB/T13748.20-2024) GB/T 15688-2024 GB 17918-2025_Chinese: Safety specification for

GB 17918-2025_Chinese: Safety specification for dust explosion protection in bulk grain loading and unloading system in port (Chinese: 港口散粮装卸系统粉尘防爆安全规范)

English versions: YY/T 1860

GB/T 24894-2025_Chinese: Animal and vegetable fats and oils - Determination of the composition of fatty acids in the 2-position of the triglyceride molecules (Chinese: 动植物油脂 甘三酯分子2-位脂肪酸组分的测定)

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)

GB/T 13748.20-2024 Chinese PDF (GB/T13748.20-2024) GB/T 15688-2024 GB 17918-2025_Chinese: Safety specification forGB T 13748. 20 2024_Chinese: Methods for chemical analysis of magnesium and magnesium alloys Part 20: Determination of elements content Inductively coupled plasma atomic emission spectrometric method (Chinese: 20 ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13748. 20 2024