A polyurethane coating is a layer of polyurethane (a type of polymer) that is applied to a material's surface in order to protect it. A polyurethane coating can protect the base material from corrosion, weathering, abrasion and other processes that would degrade the material over time. A polyurethane coating can be glossy or matt, and can be opaque or transparent. They can also be more soft and ductile, so that the base material is allowed to stretch without destroying the coating. Polyurethane coatings are not flammable, so they can be used for some situations where combustion is occurring in the same environment. Care must be taken to limit the exposure of a polyurethane coating to ultraviolet light because it can cause the coating to degrade. Polyurethane coatings are used for many different applications. Since polyurethane coatings can be waterproof and have high abrasion resistance, they are an excellent choice for this application. Polyurethane coatings are also used on metals and on top of other coatings. It is also known as photo-paint. Green core MDF with PU lacquer are green, healthy and environmental-friendly.PU LACQUER PAINT