... : Normal Coated7. Type of coating structure: 2/1 Coat the top surface of the steel sheet twice, coat the ... (7). Color difference: <3ΔEPackingApplication1. Construction: (Outside) workshop, agricultural warehouse, residential precast unit, corrugated roof, wall, ... booth, roller shutter door(Inside) door, doorcase, light steel roof structure, folding screen, ceiling, elevator, stairway, vent gutter2. ...