市场上存在的窗户类型缺陷过于明显,已经不能更好的满足人们的要求。论文通过对现有窗户市场进行调查,认清消费者的需求点,与现有窗户进行对比,指出新型旋转推拉窗的优缺点、实用性和市场前景。 The defects in the type of windows on the market are too obvious and can no longer meet people’s requirements. By investigating the existing market of windows, the paper finds out the demand points of consumers, compares them with the existing windows and points out the advantages and disadvantages, practicality and market prospect of the new rotary sash windows.