GB/T 38168-2019搪瓷制品和瓷釉涂搪制品瓷层的试验方法选择指南国家标准
英文:Vitreous and porcelain enamel finishes—Guide to selection of test methods for vitreous and porcelain enamelled areas ...
英文:Vitreous and porcelain enamel finishes—Guide to selection of test methods for vitreous and porcelain enamelled areas ...