GB 4407.2-2024 Chinese PDF GB/T 45421-2025 GB/T 45506-2025_Chinese: Residual resistance ratio

GB/T 45506-2025_Chinese: Residual resistance ratio measurement - Residual resistance ratio of cavity-grade Nb superconductors (Chinese: 剩余电阻比测量 谐振腔级铌超导体剩余电阻比测量)

2-2025_Chinese: Test methods of rare earth phosphors for LED - Part 2: Determination of relative brightness (Chinese: LED用稀土荧光粉试验方法 第2部分：相对亮度的测定)

GB/T 45371-2025_Chinese: Common terminology of ocean economy (Chinese: 海洋经济常用术语)

5-2024_Chinese: Mechanical structures for electrical and electronic equipment - Outdoor enclosures - Part 3: Environmental requirements

GB 4407.2-2024 Chinese PDF GB/T 45421-2025 GB/T 45506-2025_Chinese: Residual resistance ratioGB 4407. 2 2024_Chinese: Seed of economic crops Part 2: Oil species (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB 4407. 2 2024