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GB/T 32974-2024 Chinese PDF (GB/T32974-2024) GB/T 14285-2023 English versions: GB/T 31318-2025

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English versions: GB/T 31318-2025

English versions: GB/T 30907-2025

carbon dioxide and acetylene of ethylene and propylene for industrial use - Gas chromatographic method (Chinese: 工业用乙烯、丙烯中微量一氧化碳、二氧化碳和乙炔的测定 气相色谱法)

English versions: GB/T 45644-2025

GB/T 45544-2025_Chinese: Jump rope (Chinese: 跳绳)

GB/T 32974-2024 Chinese PDF (GB/T32974-2024) GB/T 14285-2023 English versions: GB/T 31318-2025GB T 32974 2024_Chinese: Methods of determination and calculation of heat balance in regenerative furnace of iron and steel industry (Chinese: ) Note Careful: Text of PDF is in Chinese (not English). Delivery (PDF in Chinese): 2 working hours typically, ASAP English versions: GB T 32974 2024

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