1) The model, specifications and specifications of the fittings must comply with the current national standards and relevant regulations, and also match the selected steel plastic doors and windows.
2) For sliding windows with a width of more than 1 meter or doors and windows with double-glazed windows, double pulleys or roller pulleys should be used.
3) The sliding bracket hinge should not be made of aluminum alloy, but of stainless steel.
4) When installing hardware with mounting screws, a metal backing plate must be installed inside, the thickness of the backing plate must be at least twice the fastener pitch. They should not be attached to plastic profiles or have non-metallic covers.
5) Hardware should be installed last and door and window locks, handles, etc. should be installed after the window and door sashes are inserted into the frame to ensure proper placement and flexible opening and closing.
6) Pay attention to maintenance after installing metal stamping parts to prevent rust and corrosion. For daily use, close and open lightly to prevent sudden closing and opening that could cause damage.