GB/T 38403.3-2025 Chinese PDF (GB /T38403.3-2025) GB/T 20424-2025 English versions: GB/T 17591-2025

English versions: GB/T 17591-2025

5-2024_Chinese: Measurement of fluid flow by means of pressure differential devices inserted in circular cross-section conduits running full - Part 5: Cone devices (Chinese: 用安装在圆形截面管道中的差压装置测量满管流体流量 第5部分：锥形装置)

English versions: GB 28380-2025

4-2025_Chinese: Instruments for stage measurement - Part 4: Ultrasonic stage recorder (Chinese: 水位测量仪器 第4部分：超声波水位计)

GB/T 17263-2025_Chinese: Self-ballasted lamps for general lighting service - Performance specifications (Chinese: 普通照明用自镇流荧光灯 性能规范)

GB/T 38403.3-2025 Chinese PDF (GB /T38403.3-2025) GB/T 20424-2025 English versions: GB/T 17591-2025GB T 38403. 3 2025_Chinese: Leather and fur Determination of the preservative content Part 3: Gas chromatography mass spectrometry method(methanol extraction) (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 38403. 3 2025