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2-2024_Chinese: Non-destructive testing - Ultrasonic testing block - Part 2: Calibration block No
GB 17440-2025_Chinese: Safety specification for the protection of dust explosion for grain processing
English versions: GB/T 42125
GB/T 13542
4-2025_Chinese: Geometrical product specifications (GPS) - X-ray three dimensional size measuring machines - Part 4: Evaluation of uncertainty in measurement (Chinese: 产品几何技术规范（GPS） X射线三维尺寸测量机 第4部分：测量不确定度评定)
GB/T 1149.12-2023 Chinese PDF (GB/T1149.12-2023) GB/T 32077-2025 2-2024_Chinese: Non-destructive testing - UltrasonicGB T 1149. 12 2023_Chinese: Internal combustion engines Piston rings Part 12: Half keystone rings made of steel (Chinese: 12) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 1149. 12 2023
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