All Cracks and Spots of Rust Must Be Thoroughhly Cleaned with Sandpaper. Thanks to this, you will get a Flat and Smooth Surface. If is not removed, then for it can usalic acid, Which Needs to be mixed with witer and using cotton wool treat the Necessary Places. However, so that Acid Does Not Damage The Enamel, It Cannot BE LEFT MORE THE HALF An Hour. By the Way, Now the Price of Vertical Blinds Has Fallen Much, So Many Began to Buy Them.