GB/T 38216.4-2024 Chinese PDF (GB/T38216.4-2024) GB/T 22250-2025 GB/T 44911-2024_Chinese: Aircraft equipment -

GB/T 44911-2024_Chinese: Aircraft equipment - Environmental and operating conditions for airborne equipment - Humidity

English versions: GB/T 1406

3-2024_Chinese: Measurement of airborne noise emitted by rotating electrical machines and the noise limits - Part 3: Noise limits (Chinese: 旋转电机噪声测定方法及限值 第3部分：噪声限值)

2-2024_Chinese: Variable-frequency drive above 1 kV and not exceeding 35 kV - Part 2: Test methods (Chinese: 1 kV以上不超过35 kV的通用变频调速设备 第2部分：试验方法)

GB/T 21832

GB/T 38216.4-2024 Chinese PDF (GB/T38216.4-2024) GB/T 22250-2025 GB/T 44911-2024_Chinese: Aircraft equipment -GB T 38216. 4 2024_Chinese: Steel slag Determination of total iron content Titanium(III) chloride potassium dichromate titration methods (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 38216. 4 2024