The Polycarbonate Corrugated Sheets has excellent scratch resistant effect making them the ideal upgrading products for the transparent part of the sound barrier. These Polycarbonate Corrugated Sheets are widely used in automobile industry, electron industry, building glass, skylights, counter of the bank, shower room, furniture, machine accessories, plating mirror, sign board printing, veil, mold crust, etc. Even vigorously rubbing vibrant sapphire with steel wool hardly makes an impression on this tough material.