Powder coating is a kind of 100% solids coating, which has the characteristics of solvent-free, pollution-free, energy and resource-saving, low labor intensity and high mechanical strength of coating film. Since the world's first oil crisis in 1973, the powder coating industry has been developing rapidly, by 1980, the world's powder coating production has exceeded 74kt, 290kt in 1990, 520kt in 1995, and reached 700kt in 1999. The total sales revenue of powder coatings is expected to reach 5.78 billion US dollars by 2005. (At present, the fastest growth rate of powder coatings is 7% in the Asia-Pacific region.