... Sangao Metal Structure Co.,Ltd is a professional color coated ppgi for metal roof manufacturer and factory,Website:http:// ... have been exporting high quality color coated ppgi for metal roof made in China for years, welcome to contact us ... Z, S350GD, S450GD, S550GDTechniqueCold rolled, hot-dipped galvanizing, color coated, galvanized, GalvalumeSpangleZero spangle, regular spangle or normal ...