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The hard& soft materials such as blue clay stoneware clay alkali soil purple clay and knot saggar powder porcelain powder and etc. are used to make glazed tile. 琉璃瓦可選用大青、二青、缸土、堿土、紫砂，木節等軟硬質原料及廢匣鉢粉、瓷粉等原料。