The fly ash glaze corrugated tile is made of fly ash (or slag) as basic material, functional material and adhesive with multilayer compound sandwich structure.

粉煤灰釉质波瓦是以粉煤灰(或炉渣)为基料，加入功能性材料与胶结剂，采用多层复合央芯结构制成。

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Compounded from violet-golden clay and a mixture of burnt feldspar, limestone, quartz and plant ash, the glaze is prepared from recipes that have often been handed down for generations by teachers or within families.

UNESCO: Culture