Sonas Vitreous China Ceramic Sanitary ware

The base material of the ceramic consists of natural materials: clay, kaolin, quartz and feldspar. These are poured into plaster or plastic molds (pressure casting process). The subsequent processing, for instance piercing tap holes, is done by hand. The glaze is made of quartz, gesso, feldspar, and mineral rock dolomite, and applied by hand or by glazing robots, depending on the model. The interiors of toilets and urinals are also completely glazed, a hallmark of the highest quality. The extremely high thermostability of the materials allows for firing temperatures of around 2282 °F (1250 °C).