... Common performance of front coating(1). Thickness: ≥20μm(2). Pencil Hardness: 2H(3). 60° specular ... : ≥500h(7). Color difference: <3ΔEPackingApplication1. Construction: (Outside) workshop, agricultural warehouse, residential precast unit, corrugated roof, wall ... , order handling, quality design, purchasing raw materials, working out production plan, production, test and inspection, packaging, storage ...