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GB/T 20850-2025_Chinese: Safety of machinery - Guidelines for the application of machinery safety standards (Chinese: 机械安全 机械安全标准应用指南)
English versions: GB/T 17591-2025
English versions: GB/T 17554
1-2025_Chinese: Information technology - Abstract Syntax Notation One(ASN
GB/T 20972.2-2025 Chinese PDF (GB /T20972.2-2025) GB 5009.300-2025 GB/T 20850-2025_Chinese: Safety of machineryGB T 20972. 2 2025_Chinese: Petroleum and natural gas industries Materials for use in H2S containing environments in oil and gas production Part 2: Cracking resistant carbon and low alloy steels, and the use of cast irons (Chinese: 2) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20972. 2 2025
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