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English versions: GB 28263-2024
183-2025_Chinese: National food safety standard - Determination of urease in food (Chinese: 食品安全国家标准 食品中脲酶的测定)
11-2025_Chinese: Instrument transformers - Part 11: Additional requirements for low-power passive voltage transformers (Chinese: 互感器 第11部分：低功率无源电压互感器的补充技术要求)
English versions: GB/T 21270-2025
GB/T 19799.2-2024 Chinese PDF (GB /T19799.2-2024) GB/T 20236-2025 English versions: GB 28263-2024GB T 19799. 2 2024_Chinese: Non destructive testing Ultrasonic testing block Part 2: Calibration block No. 2 (Chinese: 22) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 19799. 2 2024
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