
Refrigerating systems and heat pumps - Safety and environmental requirements Part 4: Operation, maintenance, repair and recovery
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
UNI EN 378-4:2017 - Identical
UNE EN 378-4:2017 - Identical
SN EN 378-4:2017 - Identical
NEN EN 378-4:2016 - Identical
NF EN 378-4:2017 - Identical