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GB/T 45650-2025 Chinese PDF (GB /T45650-2025) GB/T 21499-2024 1-2025_Chinese: Quality requirements for organic

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1-2025_Chinese: Quality requirements for organic acids - Part 1: Citric acid (Chinese: 有机酸质量要求 第1部分：柠檬酸)

English versions: GB/T 3260

setting time and soundness of the Portland cement (Chinese: 水泥标准稠度用水量、凝结时间与安定性检验方法)

1-2024_Chinese: Non-destructive testing - Penetrant testing - Part 1: General principles (Chinese: 无损检测 渗透检测 第1部分：总则)

GB/T 45650-2025 Chinese PDF (GB /T45650-2025) GB/T 21499-2024 1-2025_Chinese: Quality requirements for organicGB T 45650 2025_Chinese: Air source heat pump packages with carbon dioxide as refrigerants (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 45650 2025

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