Analysis of the causes of rusting of folding clothes hangers

Some people have reported to the manufacturer of the folding clothes rack that sometimes the folding clothes rack will be rusted and blackened. If it rusts for a long time, it will rot. The main reasons for this situation are:
The galvanized layer is not well protected, which leads to the damage of the galvanized layer, which leads to rust in contact with the air. After the protective layer is damaged, the objects inside are in contact with the air, resulting in black spots. We need to wipe it with a rag. If it is not wiped, there will be rust problems.
Once this phenomenon occurs, how should we solve it?
In this regard, relevant people said that in order to solve this problem, the paint surface can be restored. First of all, we need to clean the entire outdoor folding table surface. You can use a cup of water and a quarter cup of vinegar to wipe it with a soft cloth. Use alcohol or toilet water, the effect is better, and then peel off small pieces of paint. Use the same color paint to fill it. If there are cracks and holes, it is necessary to use debris and other items to paste and then paint.