GB/T 18639-2023 Chinese PDF (GB/T18639-2023) GB/T 45258-2025 5-2024_Chinese: Safety requirements for electrical

5-2024_Chinese: Safety requirements for electrical equipment for measurement

GB/T 45257-2025_Chinese: Press and publication - Knowledge services - Extraction and marking up of knowledge element (Chinese: 新闻出版 知识服务 知识元提取与标引)

GB/T 5844-2025_Chinese: Tyre coupling (Chinese: 轮胎式联轴器)

English versions: GBZ44946-2024

GB/T 32612-2025_Chinese: Textiles - Determination of ethylene glycol ethers and related ester compounds (Chinese: 纺织品 乙二醇醚类及相关酯类化合物的测定)

GB/T 18639-2023 Chinese PDF (GB/T18639-2023) GB/T 45258-2025 5-2024_Chinese: Safety requirements for electricalGB T 18639 2023_Chinese: Diagnostic techniques for rabies (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 18639 2023