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English versions: GB/T 33352-2024
nitrogen-bearing ferromanganese and manganese metal - Determination of carbon content - The Infrared absorption method
213-2023_Chinese: Luminaires - Part 2-13: Particular requirements - Ground recessed luminaires (Chinese: 灯具 第2-13部分：特殊要求 地面嵌入式灯具)
English versions: GB/T 45224-2025
GB/T 23947.3-2023 Chinese PDF (GB/T23947.3-2023) GB/T 23921-2023 English versions: GB/T 33352-2024GB T 23947. 3 2023_Chinese: General method for the determination of arsenic in inorganic chemical products Part 3: Atomic fluorescence spectrometry (Chinese: 3) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 23947. 3 2023
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