... Impact: ≥9J(6). Salt Fog Resistant: ≥500h(7). Color difference: <3ΔEPackingApplication1. Construction: (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 ...