... coils,GI AND PPGI,,construction and roofing ISO As Shanghai Sangshan Machine Co., Ltd's Partners----shandong star steel sheet ... plates of color coated steel coils and widely applied in construction, home appliances, decoration, ect. ItemColor coated steel coil( ... and so on. Standard exporting seaworthy packingThe use of PPGI1. Construction, indoor and outdoor applications: Roof ,the roof structure, ...