Precautions for maintenance of UPVC doors and windows:

Regular cleaning: Clean the surface of UPVC doors and windows regularly to avoid the accumulation of dust and dirt. You can use a soft cloth and clean water to wipe, avoid using highly corrosive cleaners.
Check hardware: Regularly check the hardware of doors and windows, such as handles, locks, etc., to ensure that they are functioning properly and are not loose or damaged. If there is any problem, tighten or replace it in time.
Lubrication and maintenance: For movable parts, such as pulleys, slide rails, etc., an appropriate amount of lubricating oil can be added regularly to keep them running smoothly.
Avoid impact: Avoid using hard objects to impact UPVC doors and windows to avoid surface scratches or deformation. At the same time, be careful not to hang heavy items on doors and windows to avoid placing excessive pressure on them.