
Pipes And Fittings Of Unplasticized Polyvinylchloride (pvc-u), With Socket For Elastic Sealing Ring Joints For Sewerage; Technical Specifications For Delivery
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Pipes And Fittings Of Unplasticized Polyvinylchloride (pvc-u), With Socket For Elastic Sealing Ring Joints For Sewerage; Technical Specifications For Delivery
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻