China windows and doors

 1. Light weight, strong and durable. Aluminum alloy doors and windows are about 50% lighter than steel doors and windows; they are more corrosion-resistant than wooden doors and windows, and are not easy to decay. The oxidized color layer does not fall off, does not fade, and is durable. 2. Good sealing performance. Aluminum alloy doors and windows have high airtightness, water tightness and sound insulation are better than wooden doors and windows and steel doors and windows. 3. Bright and beautiful color. The frame materials of aluminum alloy doors and windows are treated by ammoniating and coloring, and can be colored silver, bronze, dark red, etc., and can be colored with colored patterns. The aluminum alloy doors and windows made of it have beautiful appearance, smooth surface, bright and firm color, and enhance the decorative effect of indoor and outdoor facades. The split single-layer glass release plastic steel doors and windows are the fourth generation of doors and windows a

 1) Look at the surface of the window: the window frame should be clean, flat and smooth, with no scratches or bruises on the large surface, and no cracks in the profile. 2) Look at the hardware: the hardware must be complete, in the correct position, firmly installed, flexible in use, and able to achieve their respective functions. 3) Look at the glass sealing strip: the contact between the sealing strip and the glass and the glass notch should be smooth, and no curling or de-grooving is allowed. 4) Look at the sealing quality: When the doors and windows are half closed, there is no obvious gap between the fan and the frame, and the sealing strip on the sealing surface should be in a compressed state. 5) Look at the glass: the glass should be flat, installed firmly, and there should be no looseness, single-layer glass should not directly touch the profile, the inner and outer surfaces of double-layer glass should be clean, there should be no dust and moisture in the glass interlayer,