GB/T 13748.20-2024 Chinese PDF (GB/T13748.20-2024) GB/T 15688-2024 18-2025_Chinese: National food safety standard

18-2025_Chinese: National food safety standard - Determination of fluorine in foods (Chinese: 食品安全国家标准 食品中氟的测定)

GB 45549-2025_Chinese: Norm of energy consumption per unit production of graphite and fluorite (Chinese: 石墨和萤石单位产品能源消耗限额)

English versions: GB/T 45481-2025

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 33767

GB/T 13748.20-2024 Chinese PDF (GB/T13748.20-2024) GB/T 15688-2024 18-2025_Chinese: National food safety standardGB 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