Powder coating is a type of coating that is applied as a free-flowing dry powder. The powder is typically applied electrostatically, and is then cured under heat to allow it to flow and form a skin.
It is usually used to create a hard finish that is tougher than conventional paint. Powder coatings can produce much thicker coating then conventional liquid coatings without running or sagging.
Also powder-coating production lines produce fewer hazardous waste materials.