... process 4.Long life span Prepainted Galvalume CoilBrief Introduction1. Prepainted Galvalume Coil is coated with organic layer, ... (Outside) workshop, agricultural warehouse, residential precast unit, corrugated roof, wall, rainwater drainage pipe, terrace, retailer booth, roller ... shutter door(Inside) door, doorcase, light steel roof structure, folding screen, ceiling, elevator, stairway, vent ...