Alcohol can be used to remove stains, water can easily make boards rise and paint water can easily fall off. If there is strong sunshine by the window, don't expose yourself to the sun, otherwise the white will turn yellow easily. In addition, basically in the north, every store will have heating. Try not to put the display case in this position. Long-term high temperature will cause the paint to fall off. In a word, jewelry paint display cabinets should be waterproof. Metals are not afraid of water, but also have antioxidant treatment and are not afraid of rust.
Choose special furniture cleaners and detergents. If the stain is difficult to remove, it is not too difficult to avoid scratching the paint. A more effective method is to use toothpaste. For key maintenance or routine maintenance, regular maintenance is necessary. Prepare to use special furniture cleaner, toothpaste can be used once or twice, and can't be used again. You can also use a special cleaner to treat it several times regularly, which can make the yellow color fade.
If it is really serious, you can consider repainting it to see the effect. After all, some yellow is hard to get rid of. So don't waste time and energy. If you pay attention to maintenance at ordinary times, but it still turns yellow irreversibly, you can only repaint it to cover it up. These are the simplest and most effective methods!