1. It is particularly important to observe the details when selecting, such as whether the purchased hardware accessories indicate a series of parameters such as the factory date, material, and specifications; when choosing hinges, you must pay attention to the thickness of the hinges. Hinge that is too thin will have poor load-bearing capacity and easily cause deformation or bending. Hinge that is too thick will easily cause the gap between the door cover and the door leaf to become larger, affecting the sound insulation effect;
2. For the door lock department, you can understand it by observation. The door lock usually has a smooth and delicate surface, flat and without dents, and check whether the surface is oxidized.
3. The tracks for sliding doors are generally cold-rolled steel tracks and aluminum alloy tracks. High-quality sliding door hardware is reflected in the perfect combination of the track and the pulley, rather than a single part, so the thickness of the track wall should not be one-sidedly focused. The track must have a perfect curvature with the pulley, and the material problem is second.