Building materials are mainly old brick, old tile and old door sheet.
主要建筑材料是旧砖、旧瓦片和老门板。
A hung heat insulation tile belongs to the field of the building materials.
一种挂式隔热瓦，属于建筑材料领域。
The optimization formula of green body of building material glazed tile has been developed using gangue as main raw materials and talcum as main flux.
以煤矸石为主要原料和滑石尾矿为主要熔剂，设计和优化了生产绿色环保建筑琉璃瓦坯体配方。
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