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2-2025_Chinese: Acoustics - Measurement of the influence of road surfaces on traffic noise - Part 2: The close-proximity method (Chinese: 声学 道路表面对交通噪声影响的测量 第2部分：近距法)
English versions: GB/T 21121-2024
GB/T 44837-2024_Chinese: Green product assessment - Stationery (Chinese: 绿色产品评价 文具)
GB/T 45470-2025_Chinese: Recycled carbon fiber for cement concrete (Chinese: 水泥混凝土用回收碳纤维)
GB/T 18115.6-2023 Chinese PDF (GB/T18115.6-2023) GB/T 45435-2025 2-2025_Chinese: Acoustics - Measurement ofGB T 18115. 6 2023_Chinese: Chemical analysis methods of rare earth impurities in rare earth metals and their oxides Part 6: Determination of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and yttrium contents in europium metal and oxide (Chinese: 6) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP
