GB/T 21461.1-2023 Chinese PDF (GB/T21461.1-2023) GB/T 45279.3-2025 3-2023_Chinese: Aramid pressboard for electrical

3-2023_Chinese: Aramid pressboard for electrical purposes - Part 3: Specifications for individual materials (Chinese: 电气用聚芳酰胺纤维纸板 第3部分：单项材料规范)

English versions: GB 23826-2025

GB 12664-2024_Chinese: General technical requirements for portable X-ray security inspection equipment (Chinese: 便携式X射线安全检查设备技术规范)

GB/T 28168-2025_Chinese: Information technology - Middleware - Technical requirement for message-oriented middleware (Chinese: 信息技术 中间件 消息中间件技术要求)

GB/T 21461.1-2023 Chinese PDF (GB/T21461.1-2023) GB/T 45279.3-2025 3-2023_Chinese: Aramid pressboard for electricalGB T 21461. 1 2023_Chinese: Plastics Ultra high molecular weight polyethylene (PE UHMW) moulding and extrusion materials Part 1: Designation system and basis for specifications (Chinese: PE UHMW 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 21461. 1 2023