GB/T 31486-2024 Chinese PDF (GB/T31486-2024) GB/T 45593-2025 2-2023_Chinese: Plain bearings - Metallic

2-2023_Chinese: Plain bearings - Metallic multilayer plain bearings - Part 2: Destructive testing of bond for bearing metal layer thicknesses greater than or equal to 2 mm (Chinese: 滑动轴承 多层金属滑动轴承 第2部分：合金厚度≥2mm的结合强度破坏性试验)

GB/T 29284-2024_Chinese: Poly(lactic acid) (Chinese: 聚乳酸)

GB 20052-2024_Chinese: Minimum allowable values of energy efficiency and the energy efficiency grades for power transformers (Chinese: 电力变压器能效限定值及能效等级)

GB/T 12940-2023_Chinese: Technical specification for silver-graphite electrical contacts (Chinese: 银石墨电触头技术条件)

GB 29449-2024_Chinese: Norm of energy consumption per unit production of tyre and carbon black (Chinese: 轮胎和炭黑单位产品能源消耗限额)

GB/T 31486-2024 Chinese PDF (GB/T31486-2024) GB/T 45593-2025 2-2023_Chinese: Plain bearings - MetallicGB T 31486 2024_Chinese: Electrical performance requirements and test methods for traction battery of electric vehicle (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 31486 2024