
REFRIGERATING SYSTEMS AND HEAT PUMPS - QUALIFICATION OF TIGHTNESS OF COMPONENTS AND JOINTS (ISO 14903:2017)
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
EN ISO 14903 : 2017 - Identical
ISO 14903 : 2017 - Identical
ISO 14903 : 2017 - Identical
EN ISO 14903 : 2017 - Identical