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GB/T 34430
English versions: GB/T 18822
English versions: GB/T 45041-2024
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)
English versions: GB/T 14896
GB/T 45021.1-2024 Chinese PDF (GB /T45021.1-2024) GB/T 17215.241-2025 GB/T 34430GB T 45021. 1 2024_Chinese: Photovoltaic (PV) module performance testing and energy rating Part 1: Irradiance and temperature performance measurements and power rating (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45021. 1 2024
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