At present, the single greenhouse for vegetables mainly has GP832 and GP825 specifications, and the basic parameters are hot-dip galvanized pipes. GP832 arch bar has a diameter of 32mm, a wall thickness of 1.5mm, GP825 arch bar has a diameter of 25mm, a wall thickness of 1.5mm or 1.2mm, a standard span of 8m, a length of 40m, a shed height of 3.3m and an arch bar spacing of 3.3m..GP832 (including film pasting). Vegetable greenhouses with a total area of more than 30,000 square meters can also apply for subsidies, accounting for about 25% of the total project price.