GB/T 10250-2025 Chinese PDF (GB /T10250-2025) GB 45187-2024 20-2024_Chinese: Chemical analysis methods for

20-2024_Chinese: Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides - Part 20: Determination of minor amounts of fluorine and chlorine in rare earth oxides - Ion chromatography method (Chinese: 稀土金属及其氧化物中非稀土杂质化学分析方法 第20部分：稀土氧化物中微量氟、氯的测定 离子色谱法)

GB 17741-2025_Chinese: Evaluation of seismic safety for engineering sites (Chinese: 工程场地地震安全性评价)

English versions: GB/T 12417

4-tetramethyl-1

GB 20943-2025_Chinese: Minimum allowable values of energy efficiency and energy efficiency grades for AC-DC and AC-AC power supplies (Chinese: 交流-直流和交流-交流电源能效限定值及能效等级)

GB/T 10250-2025 Chinese PDF (GB /T10250-2025) GB 45187-2024 20-2024_Chinese: Chemical analysis methods forGB T 10250 2025_Chinese: Electrical and electronic installations in ships Electromagnetic compatibility(EMC) Ships with a metallic hull (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 10250 2025