The greenhouse covering materials - polycarbonate hollow board (PC board) and other covering materials, compared with the many advantages of good lighting, warm, lightweight, high strength, anti-condensation, impact resistance, flame retardant, economical and durable, the sunny side of the plate is coated with UV protection and anti-aging properties of up to 10 years. So by its cover material for the greenhouse, long life, beautiful appearance beautiful, good insulation affect savings in heating energy consumption in the winter. Insulation energy-saving effect with a single layer of glass compared to 50% energy savings of fuel consumption of 23.5 liters per square meter per year. Greatly reduce the running cost in the winter.