GB/T 20405.5-2025 Chinese PDF (GB /T20405.5-2025) GB 29743.2-2025 2-2024_Chinese: Grades of cemented carbide

2-2024_Chinese: Grades of cemented carbide - Part 2: Grades of cemented carbide for rock drilling and engineering (Chinese: 硬质合金牌号 第2部分：凿岩及工程用硬质合金牌号)

Note/Careful: Text of PDF is in Chinese (not English)

GB/T 20236-2025_Chinese: Accelerated outdoor weathering test methods for nonmetallic materials using concentrated natural sunlight (Chinese: 非金属材料的聚光加速户外暴露试验方法)

25-2024_Chinese: Environmental testing - Part 3: Test guidance - Seismic test methods (Chinese: 环境试验 第3部分：试验导则 地震试验方法)

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)

GB/T 20405.5-2025 Chinese PDF (GB /T20405.5-2025) GB 29743.2-2025 2-2024_Chinese: Grades of cemented carbideGB T 20405. 5 2025_Chinese: Urine absorbing aids for incontinence Polyacrylate superabsorbent powders Part 5: Test method for determination of the free swell capacity in saline by gravimetric measurement (Chinese: 5) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20405. 5 2025