... Concrete 混凝土砖 Calcium silicate brick 硅酸钙砖 Perforated clay brick 空心粘土砖 ...
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... calcium series free cutting steel || 钙系易切削钢 calcium silicate brick || 硅酸盐砖 calcium silicate thermal insulation material || 硅酸钙绝热材料 ...
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