建筑沥青

沥青回收的新功效——向专家学习如何高效地辗磨、粉碎及筛选旧沥青，并将其以10～15％的比例添加到新混合体中，既节约成本，又保护环境。

lightweight building block

road construction machine (road building machinery)

building blocks【建】

chiral building block

factory building

building

metal window wall building

high-rise building engineering【建】