The use of materials above doors and Windows is generally aluminum alloy, because its compressive strength is very high, and the shape is very beautiful, can be suitable for all decoration styles, home improvement is inseparable from aluminum doors and Windows, in the family decoration process, we all know that in the decoration design, we will choose aluminum doors to partition or distinguish the kitchen and bathroom space. Compared with other materials, aluminum alloy material is not afraid of water and tide, and is used as a bathroom door. Windows as a kind of furniture that will come into contact with rain, the use of aluminum alloy materials is also more common.