Polycarbonate (PC) is a transparent and hard thermoplastic. It can be produced in various thicknesses consisting of two layers and spaces between it, flexible, high resistance to fire and impact.It is a long-lasting cover material that has been widely used in greenhouses in recent years. Polycarbonate sheets are divided into two as solid polycarbonate and corrugated polycarbonate sheets. Solid Polycarbonate: It has a light transmittance close to glass, can be shaped according to thermoform and cold bending, maintains its durability at very low and very high temperatures, has protection against ultraviolet effect of the sun, is not affected by external environmental conditions, is fifty percent lighter than glass and has three hundred times higher impact resistance.