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English versions: GB/T 3688-2025
GB 30253-2024_Chinese: Minimum allowable values of energy efficiency and energy efficiency grades for permanent magnet synchronous motors (Chinese: 永磁同步电动机能效限定值及能效等级)
English versions: GB/T 20510-2024
GB/T 22310-2023_Chinese: Road vehicles - Brake linings - Effects of heat on dimensions and form of disc brake pads test method (Chinese: 道路车辆 制动衬片 盘式制动衬块受热膨胀量试验方法)
5t的车辆气制动系统试验 使用滚筒制动试验台获取和使用参考值)
GB/T 21431-2023 Chinese PDF (GB/T21431-2023) GB/T 45498.4-2025 English versions: GB/T 3688-2025GB T 21431 2023_Chinese: Technical specification for inspection of lightning protection systems of buildings (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21431 2023
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