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GB/T 26024-2021 空調(diào)與制冷系統(tǒng)閥件用銅及銅合金無縫管 Seamless copper and copper alloys tube for valves on ai...2023-09-16

DIN V 18599-7-2018 Energy efficiency of buildings - Calculation of the net, final and primary energy demand...2023-08-16

BS EN ISO 15138-2018 石油和天然氣工業(yè) 海上生產(chǎn)設(shè)施供暖,通風(fēng)和空氣調(diào)節(jié) Petroleum and natural gas industries....2023-06-27

GB/T 26024-2021空調(diào)與制冷系統(tǒng)閥件用銅及銅合金無縫管Seamless copper and copper alloys tube for valves on air-...2022-10-25

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