PVC windows are most easily cleaned by a soft cotton cloth. Pour lukewarm water and dishes detergent in a bowl and then soak the cloth. Avoid wiping with a dry dust cloth in order not to make static electricity which will even more attract the dust. Do not use sharp and harsh detergents, diluent, acetone or similar products because they can cause damages of external profile glaze.
Use a soft cotton cloth and glass cleaner for glass cleaning.