GB 21342-2025 Chinese PDF GB 10770-2025 24-2025_Chinese: Methods for chemical analysis

24-2025_Chinese: Methods for chemical analysis of magnesium and magnesium alloys - Part 24: Determination of trace impurity elements contents - Glow discharge mass spectrometry (Chinese: 镁及镁合金化学分析方法 第24部分：痕量杂质元素的测定 辉光放电质谱法)

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)

75-2025_Chinese: National food safety standard - Nutrition fortifier - 6S-5-methyltetrahydrofolate

English versions: GB/T 16702

GB 21342-2025 Chinese PDF GB 10770-2025 24-2025_Chinese: Methods for chemical analysisGB 21342 2025_Chinese: Norm of energy consumption per unit production of coke (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 21342 2025