Doors and windows are an indispensable part of the living room

Doors and windows are an indispensable part of the living room. Doors and windows have gone through four eras: wood, steel, aluminum alloy, and plastic steel doors and windows. Wooden doors and windows are moderately priced, have poor appearance, poor sealing, are prone to fire and flammable, deform and crack, and are only suitable for low-grade use. They are suitable for general places, have high maintenance costs, and have a short service life. Steel welded doors and windows have low prices, low grades, are prone to corrosion and deformation, high maintenance costs, short service life, and are facing elimination. Aluminum alloy doors and windows have good flame retardancy, luxurious appearance, but poor overall integrity, are prone to deformation and corrosion, and have poor insulation, insulation, and sound insulation effects.