From the beginning of pretreatment to the production of final products, all the raw and auxiliary materials of famous brands with good international reputation and stable quality are used. For example, the aluminum substrate adopts the most famous Southwest Aluminum, Ruimin Aluminum and other China Aluminum; The production of core material; the pretreatment agent adopts Henkel and Kemetel of Germany; the fluorocarbon paint adopts the resin fluorocarbon content more than 70% paint produced by PPG company in the United States; the polyester paint adopts Sweden Beko Company and KFCC, etc.; Unsprayed with Austrian Tiger Powder.