Ronda Group provides door and window installation services. When installing doors and windows, the door and window opening dimensions must be reserved according to the design. The door and window frames and the openings should be elastically connected firmly. For openings made of lightweight wall materials, corresponding treatments should be made around the opening or at the joints to ensure reliable connections. The door and window installation assemblies should be firmly connected. The distance between two adjacent connection points should not be greater than 600mm. For aluminum alloy doors and windows, it should be 400mm. , and use corrosion-resistant filling materials to make the connection parts sealed and waterproof.