随着门窗市场新产品的出现,在现实生活中,人们不在使用过去的木门窗、钢门窗,而铝合金门窗及断桥吕门窗又造价太高,普通的老百姓不能接受,而用未增塑PVC型材制作的塑钢门窗,其美观性、安全性和耐用性及价格和理性深受广大百姓欢迎。门窗不仅体现在型材产品质量上,而且体现在PVC型材的断面结构上。门窗用未增塑PVC型材断面结构通常由外壁、内筋、型腔、各式 With the emergence of new products in the window and door market, in real life, people are not using the past wood doors and windows, steel doors and windows, and aluminum alloy doors and windows and doors and windows broken bridge Lu cost too high, ordinary people can not accept, PVC profiles made of steel doors and windows, its aesthetics, safety and durability and price and rationality by the general public. Doors and windows are not only reflected in the profile of product quality, but also reflected in the PVC profile of the cross-section structure. PVC windows and doors with non-plastic profile section structure usually by the outer wall, rib, cavity, all kinds