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and the use of cast irons (Chinese: 石油天然气工业 油气开采中用于含硫化氢环境的材料 第2部分：抗开裂碳钢、低合金钢和铸铁)
English versions: GB/T 22248-2025
GB/T 19713-2025_Chinese: Cybersecurity technology - Public key infrastructure - Online certificate status protocol (Chinese: 网络安全技术 公钥基础设施 在线证书状态协议)
GB/T 22210-2024_Chinese: Specification for sensory evaluation of meat and meat products (Chinese: 肉与肉制品感官评定规范)
English versions: GB/T 21369-2024
GB/T 20042.7-2024 Chinese PDF (GB /T20042.7-2024) GB/T 23301-2024 and the use of castGB T 20042. 7 2024_Chinese: Proton exchange membrane fuel cells Part 7: Test method of carbon paper properties (Chinese: 7) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 20042. 7 2024
US$ 34.78
US$ 115.67
US$ 127.77
