prEN ISO 4528:2021 Vitreous and porcelain enamel finishes - Guide to selection of test methods for vitreous and porcelain enamelled areas of articles (ISO/DIS 4528:2021)
2021prEN ISO 4528:2021 Vitreous and porcelain enamel finishes - Guide to selection of test methods for vitreous and porcelain enamelled areas of articles (ISO/DIS 4528:2021)