PPGI1.According to the use of substrate classification; usually used for organic coated steel plate substrates are: cold-rolled plate,Website:http://www.cnhousesteel.com,hot galvanized sheet, galvanized sheet, alloy plate, galvanized sheet, galvanized alloy plate, tin plate, chrome plate, aluminum plate, etc..2.By coating methods, there are roller coating, spray coating, powder method, laminating, ...