GB/T 28869.3-2023 Chinese PDF (GB/T28869.3-2023) GB/T 32151.39-2025 English versions: GB/T 22553-2023

English versions: GB/T 22553-2023

3-2025_Chinese: Information technology - Virtual reality content representation - Part 3: Audio (Chinese: 信息技术 虚拟现实内容表达 第3部分: 音频)

1-2025_Chinese: Test methods of rare earth phosphors for LED - Part 1: Determination of spectrum (Chinese: LED用稀土荧光粉试验方法 第1部分：光谱的测定)

GB 31830-2024_Chinese: Norm of energy consumption per unit production of toluene diisocyanate and diphenyl methane diisocyanate (Chinese: 甲苯二异氰酸酯和二苯基甲烷二异氰酸酯单位产品能源消耗限额)

English versions: GB/T 29168

GB/T 28869.3-2023 Chinese PDF (GB/T28869.3-2023) GB/T 32151.39-2025 English versions: GB/T 22553-2023GB T 28869. 3 2023_Chinese: Cores made of soft magnetic materials Measuring methods Part 3: Magnetic properties at high excitation level (Chinese: 3) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 28869. 3 2023