
Fire Resisting Doorsets - Vertical Lifting, Sectional Overhead, Tilting, Rolling, Sliding And Folding Doors - Marking Of Conformity - Requirements, Testing, Marking
出版:Osterreichisches Normungsinstitut

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Fire Resisting Doorsets - Vertical Lifting, Sectional Overhead, Tilting, Rolling, Sliding And Folding Doors - Marking Of Conformity - Requirements, Testing, Marking
出版:Osterreichisches Normungsinstitut
專家解讀視頻