After door window is installed, because of the careless of installation personnel, often can appear filling bubble agent thickness is not even or stick besmear to go up in model upvc american upvc windows cebu, sometimes, stubborn mark be soked also is existing.  

We can clean like this:  

1.Shovel the convex part of the filling part with a shovel knife, and polish it with sandpaper.  

2.If there is paint decoration, the same color of paint can be used to handle the leveling place.  

3.Scrub the surface of the profile with water to remove general dust.  

4.Dip white cotton yarn with ethyl acetate to scrub stubborn marks, and then scrub with water.