fly ash roof insulating brick的意思|示意
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粉煤灰屋面保温砖
fly ash roof insulating brick的网络常见释义
粉煤灰屋面保温砖 粉煤灰-胶凝料轻体砖 fly ash-binding materials light weight brick 粉煤灰屋面保温砖 fly ash roof insulating brick 有机硅嵌段水性聚氨酯整理剂 finishing agent based on water dispersed polysiloxang polyurethane block capolymers ..