The Quality Standard of Ceramic Tableware
Appearance quality standard: Appearance quality is an important indicator of porcelain product grade classification. my country's current product standards divide products into three categories: high-quality products, first-class products, and qualified products. The high-quality products are equivalent to the international advanced level, the first-class products are the domestic advanced level, and the qualified products are the domestic general level. The appearance quality of top-grade products basically meets the requirements of "five without one small", that is, no spots, no slag, no color dirty, no pinholes, no glazed scratches, and small deformation. If there are spots on the product, it will always give people a feeling of uncleanness, thereby affecting appetite. First-class products and qualified products have larger requirements for allowing defects than superior products. Lead and cadmium dissolution standard: The amount of lead and cadmium eluted is an impo...