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Extremely hard zirconia ceramics case start with powder

The advanced ceramics used in watches are different from other ceramics. The raw materials are purer and the manufacturing process is more complex. Porcelain that simply burns clay, they are not easy to break. The raw material is zirconia, they are mixed with many auxiliary materials to form a uniform material, formed and finally sintered at high temperature in the oven. In the sintering process, the auxiliary materials volatilize, leaving an extremely stable ceramic body composed of countless tiny particles.