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English versions: GB/T 18655-2025
11-2025_Chinese: Plastics piping systems for renovation of underground water supply networks - Part 11: Lining with inserted hoses (Chinese: 地下供水管网非开挖修复用塑料管道系统 第11部分：软管穿插内衬法)
GB/T 27534
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GB/T 30491.2-2024 Chinese PDF (GB/T30491.2-2024) GB/T 16439-2024 GB/T 23718GB T 30491. 2 2024_Chinese: Natural gas Calculation of thermodynamic properties Part 2: Single phase properties(gas, liquid, and dense fluid)for extended ranges of application (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 30491. 2 2024
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