(1) Door and window design and production shall comply with the standards. The material and color should meet the requirements of the households.
(2) The installation of doors and windows must be firm, and the height should be the same. The gap between the frame and the wall should be filled with fullness and compactness, and the surface should be smooth and flat with no cracks. The filling materials and methods are in compliance with the regulations.
(3) Door and window fans should be flexible and free from block. The hardware accessories are complete and the position is correct. When it is closed, the seal should be in a compressed state.
(4) After the installation of doors and windows, the appearance quality should be clean on the surface, without scratches, bumps, and rust on the large surface. The coating film is smooth and even on the large surface, uniform in thickness, and free from porosity
Door and window villa design window
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