Draft Document - Refrigerating systems and heat pumps - Qualification of tightness of components and joints - Amendment 1 (ISO 14903:2017/DAM 1:2022); German and English version EN ISO 14903:2017/prA1:2022
文件草案-制冷系统和热泵-部件和接头密封性鉴定-修改件1(ISO 14903-2017/DAM 1-2022);德语和英语版本EN ISO 14903:2017/prA1:2022