You can clean up the sundries in the guide groove of the plastic window first; Then, the plastic steel window is corrected to ensure no deformation problem; At this time, the snap point can only be adjusted if there is no other abnormality in the model steel window. You can tighten the locking screw with a screwdriver to see if it is restored. Generally, the screw is loose, which is prone to the problem of locking point error. If the lock point is misplaced, you need to find professional maintenance personnel.
Plastic-steel window is mainly due to many advantages of this material, among which the machinability advantage gives plastic-steel window better heat insulation, sound insulation and waterproof performance, and at the same time, it can complete more accurate cross-sectional structure through mold when making.