
Pipes Of High-density Polyethylene (pe-hd) For Buried Telecommunication - Dimensions And Technical Delivery Conditions
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Pipes Of High-density Polyethylene (pe-hd) For Buried Telecommunication - Dimensions And Technical Delivery Conditions
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻