GB/T 9489-2024 Chinese PDF (GB /T9489-2024) GB/T 44939-2024 English versions: GB/T 45553-2025

English versions: GB/T 45553-2025

2-2025_Chinese: Nanotechnology - Nanogenerator - Part 2: Test methods for electric performance of triboelectric nanogenerators (Chinese: 纳米技术 纳米发电机 第2部分：摩擦纳米发电机电性能测试方法)

GB/T 44945-2024_Chinese: Textiles - Quantitative chemical analysis - Mixtures of mulberry silk and tussah silk (Chinese: 纺织品 定量化学分析 桑蚕丝与柞蚕丝的混合物)

GB/T 21638-2025_Chinese: Microbeam analysis - Guidelines for electron beam microanalysis of defects in steel materials (Chinese: 微束分析 钢铁材料缺陷电子束显微分析方法通则)

6-2024_Chinese: Mechanical vibration - Evaluation of machine vibration by measurements on non-rotating parts - Part 6: Reciprocating machines with power ratings above 100 kW (Chinese: 机械振动 在非旋转部件上测量评价机器的振动 第6部分：功率大于100kW的往复式机器)

GB/T 9489-2024 Chinese PDF (GB /T9489-2024) GB/T 44939-2024 English versions: GB/T 45553-2025GB T 9489 2024_Chinese: Methods for chemical analysis of alundum powder (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 9489 2024