GB/T 38403.3-2025 Chinese PDF (GB /T38403.3-2025) GB/T 20424-2025 English versions: GB/T 38659

English versions: GB/T 38659

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)

5-2024_Chinese: Safety requirements for electrical equipment for measurement

English versions: GB/T 22939

English versions: GB 12710-2024

GB/T 38403.3-2025 Chinese PDF (GB /T38403.3-2025) GB/T 20424-2025 English versions: GB/T 38659GB 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