A sandwich panel consists of three layers: a lightweight core in the center, sandwiched between two thin skin layers of PPGI (Make JSW, AMNS, Asian & Colorshine) PPGL (Make JSW, Colorshine, TATA & TATA Bluescope) on each side. Metal-faced polyurethane sandwich panels are the system of choice today for large industrial buildings refrigerated warehouses, office blocks, exhibition halls, fair pavilions, schools, and sports halls. The aluminum or steel facings themselves are surface coated and can be manufactured with profiles of various depths leading to a higher load-bearing capacity.