| 1. Outstanding heat insulation Weijia’s door and window adopt materials of low heat conduction rate (heat conduction coeffi2cient 2.7w/㎡k)and super heat materials to keep heat and stop fire for their heat resistance is larger than 0.33㎡.k/w. 2. Excellent sound insulation Weijia’s door and window can keep away noise outside above 30dBtor excellent materials chosen, good design and seal. 3. Super durability To guard against prevent deformation and color change, the door and window, are specially treated by corrosiveness resistance and ageing resistance to keep good look at any time and place. 4. Good air and water seal Weijia’s door and window have better air and water seal than that of other doors and windows at the sane trade. The air seal capacity is about <0.5m3/m.h while water seal capacity >350pa. They can refuse the strong wind and strong gong inside from outside doors and widows. 5. Easy open-shut Weijia’s door and window have smooth block and track of lower friction coefficient as well ad steel-plastics and aluminum alloy are smooth of their own. It is easy to open and shut without any noise. |
