Fly ash and coal gangue were used as main raw materials to roast solid insulating brick.

采用废弃物粉煤灰和煤矸石为主要原料焙烧实心墙体保温砖。

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Fly ash and coal gangue were used as main raw materials to roast solid insulating brick.

采用废弃物粉煤灰和煤矸石为主要原料焙烧实心墙体保温砖。

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