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Anonymous users2024-01-24It is definitely necessary that if there is no screen window when the exterior doors and windows are open, mosquitoes and flies will enter the room.
Exterior doors and windows of high-rise buildings need to be installed for lightning protection facilities for more than 30 meters. >>>More
The opening method is different, the outer opening is directly pushed outward, and the inner opening has a hardware card slot, which can be opened twice, and Fuxuan also has this kind of it.
The exterior doors and windows should be according to the regulations of your community property, as far as I know, some communities are not allowed to change the property for the beauty of the whole building.
Find the relevant form, how to ask how to inspect, but the "three sexes" test of aluminum alloy and plastic steel doors and windows should be sent to the authority for testing.
Water sealing: The airtightness of doors and windows refers to the amount of air permeability per unit opening joint length or unit area of doors and windows. It tests the ability of doors and windows to prevent air penetration when closed. >>>More