タイトルまたは説明

 Features:
1. Hung window is widely used in buildings, many villas are installed with this kind of window. It can not only increase room’s light and ventilation, but also improve room’s water tightness and air tightness. 
2. Superior Performance: Hung window is much better than sliding window on performance of function and shape. 
3. Hung window focuses on both ventilation and lighting, it won’t have visual impairment, and can be adjusted uper and lower as needed. Because it’s not a casement window, or a sliding window, it can be easily installed with mash. Under emergency, escaping is easy. If it’s designed as a continuous style, natural ventilation completely blows in. 
4. Tightness of hung window is better than the one of sliding window, that bolts down to its structure. Sliding window slides from left to right against rails and pulleys on the bottom, so the gap between rail and pulley still exists.