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GB/T 18247
English versions: GB/T 45348-2025
English versions: GB/T 45619-2025
GB/T 45629
GB/T 45542-2025_Chinese: Specification for integrated energy efficiency evaluation of industrial boilers (Chinese: 工业锅炉综合能效评价技术规范)
GB/T 15558.1-2023 Chinese PDF (GB/T15558.1-2023) GB/T 45547-2025 GB/T 18247GB T 15558. 1 2023_Chinese: Buried polyethylene(PE) piping systems for the supply of gaseous fuels Part 1: General (Chinese: PE 1) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 15558. 1 2023
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US$ 64.90
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