The national construction ministry once below limit the use of expansive pearlite as insulation slurry.

国家建设部一度下文限制使用膨胀珍珠岩作为内保温浆料。

youdao

The national construction ministry once below limit the use of expansive pearlite as insulation slurry.

国家建设部一度下文限制使用膨胀珍珠岩作为内保温浆料。

youdao