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English versions: GB/T 45426-2025
English versions: GB/T 45139-2024
GB/T 7143-2025_Chinese: Methods for chemical analysis of silica sand for foundry (Chinese: 铸造用硅砂化学分析方法)
“dry” and “wet” conditions (Chinese: 金属和合金的腐蚀 循环暴露在盐雾、“干”和“湿”条件下的加速试验)
GB/T 15237-2025_Chinese: Terminology work and terminology science - Vocabulary (Chinese: 术语工作及术语科学 词汇)
GB/T 4437.1-2023 Chinese PDF (GB/T4437.1-2023) GB 43631-2023 English versions: GB/T 45426-2025GB T 4437. 1 2023_Chinese: Aluminium and aluminium alloys extruded tubes Part 1: Seamless tubes (Chinese: 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 4437. 1 2023
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