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English versions: GB/T 11856
4-2025_Chinese: Test methods of rare earth phosphors for LED - Part 4: Determination of high temperature and high humidity property (Chinese: LED用稀土荧光粉试验方法 第4部分：高温高湿性能的测定)
3-2024_Chinese: Low-voltage electrical installations - Part 5-54: Selection and erection of electrical equipment - Earthing arrangements and protective conductors (Chinese: 低压电气装置 第5-54部分：电气设备的选择和安装 接地配置和保护导体)
English versions: GB/T 31814-2024
GB/T 21551
GB/T 42567.4-2025 Chinese PDF (GB /T42567.4-2025) GB/T 36732-2024 English versions: GB/T 11856GB T 42567. 4 2025_Chinese: Reference conditions and procedures for testing industrial and process measurement transmitters Part 4: Specific procedures for level transmitters (Chinese: 4) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 42567. 4 2025
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