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English versions: GB/T 18376
3-2025_Chinese: Non-destructive testing - Ultrasonic testing block - Part 3: Calibration block for curved surface (Chinese: 无损检测 超声检测试块 第3部分：曲面检测标准试块)
GB/T 22320-2025_Chinese: Information technology - Chinese coded character set - 15×16 dot matrix font of Chinese ideogram (Chinese: 信息技术 中文编码字符集 汉字15×16点阵字型)
40-2024_Chinese: Specifications for optical fibre test methods - Part 40: Measurement methods and test procedures for transmission characteristics - Attenuation (Chinese: 光纤试验方法规范 第40部分：传输特性的测量方法和试验程序 衰减)
English versions: GB 5009
GB/T 13000-2025 Chinese PDF (GB /T13000-2025) GB 19081-2025 English versions: GB/T 18376GB T 13000 2025_Chinese: Information technology Universal coded character set(UCS) (Chinese: UCS) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 13000 2025
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