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特点、构造、材料、设备、施工工艺、生产成本和应用。
We must make structure adjustment of paper making raw materials, use lumber as the main material and rationally use non-lumber fibrous materials.
我国造纸工业必须调整原料结构，做到以木为主，合理利用非木材纤维原料。
This paper introduces the structure, composition of raw materials, formular, production process, product performance, application range, construction and installation method of the wall block.
介绍了插口组合式空心墙体砌块的结构、原材料组成、配方、生产工艺、产品性能、适用范围及施工、安装方法。
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