PPGI is a product which is based on hot-dip galvanized sheet, hot-dip galvalume sheet, electrolytic galvanized sheet and so on. After surface pre-treatment (chemical defatting and chemical conversion tr-eatment), it is coated with one or more layers of organic coating on the surface, and then cured by baking.PPGI has light weight, beautiful appearance, good anti-corrosion performance and can be directly processed. The color is generally divided into gray, sea blue and brick red. It is mainly used in advertising，construction, household appliances, electrical appliances, furniture and transportation industries.