近年来,塑料异型材作为钢、木、铝等有色金属的替代材料正在大步跨入建材行列,成为一个新兴的行业。其中,硬质聚氯乙烯塑料异型材门窗发展最为迅速,已被国家列入“八五”推广计划,正在改变着我国建筑过去完全依赖木材、钢材、铝合金制窗的模式。 In recent years, as a substitute material for non-ferrous metals such as steel, wood, and aluminum, plastic profile materials have strided into the ranks of building materials and become a new industry. Among them, rigid PVC plastic profiles and doors have been developed most rapidly and have been included in the “Eighth Five-Year Plan” promotion plan by the state. They are changing the pattern that our buildings used to rely entirely on wood, steel, and aluminum alloy windows in the past.