Unlike traditional latex or acrylic coatings, polyurea, as a suitable waterproofer even under seawater immersion, is in no way influenced by ponding water, which is very often on existing roofs.

优酸防水涂料的主要一是聚脲的耐积水性能，而屋面积水在国内常普遍。

The characteristic, structure, raw materials, equipment, process, cost and applications of arched colour plated roofing are introduced. The foams act as insulator, seal and waterproofer in roofing.

简要介绍了用泡沫塑料保温、密封、防水的拱形彩钢屋面的、造、材料、设备、施工工艺、生产成本和应用。