DIN EN ISO 28721-1:2018現行
Vitreous and porcelain enamels –Glass-lined apparatus for process plants -Part 1: Quality requirements for apparatus, components, appliances and accessories(ISO/DIS 28721 1:2018);German and English version prEN ISO 28721-1:2018
出版：German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻
