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NF A91-322-2019   Vitreous and porcelain enamels - Regenerative, enamelled and packed panels for air-gas and gas-gas heat exchangers - Specifications NF A91-322-2019   Vitreous and porcelain enamels - Regenerative, enamelled and packed panels for air-gas and gas-gas heat exchangers - Specifications

NF A91-322-2019 Vitreous and porcelain enamels - Regenerative, enamelled and packed panels for air-gas and gas-gas heat exchangers - Specifications

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  • 标准编号:NF A91-322-2019
  • 标准状态:现行
  • 更新时间:2023-12-16
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