Greenhouse major types: plastic greenhouse structure. Greenhouse Alliance dominated by mechanical ventilation, greenhouse can be expanded to a maximum width of 60m, but it is best limited to about 50m; length of the greenhouse, and (from the perspective of ease of operation) is preferably limited to less than 100m, but not strictly requirements. Plastic greenhouses main structure is generally used for hot-dip galvanized steel main load-bearing structure seasons greenhouses, industrial production seasons greenhouse project, on-site installation. The height of the north-south span Greenhouse: height and north-south span, should be based on the latitude to be. Because height and span greenhouse lighting surface determines the angle, the angle of light around the sun again face the size of the angle of incidence. Ensure a greater incidence rate sunlight greenhouses offer four seasons, which should be less than 40 degrees angle of incidence. Because the sun's angle of incidence of light projected rate closely. Its angle of incidence in the range of 0-40 degrees seasons greenhouse manufacturers, with the angle of incidence increases, the incidence rate of light down, but did not change significantly, while after the incident angle greater than 40 degrees, with the angle of incidence increases, the transmittance rate was even dramatically. Four Seasons Greenhouse Quote | Communications Technology (certified) | Wuhan Seasons greenhouses provided by Anyang City Communications Technology Limited. Anyang City Communications Technology Co., Ltd. (www.aytlkj.com) is Anyang, a leader in agricultural supplies, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Communications technology leadership in the staff warmly welcome all inquiries negotiations to create a better future for Communications Technology.