The overall size of these greenhouse plastic greenhouses in different countries have different structural dimensions. But overall, common greenhouse span of 6 * 12m, bay about 4m, greenhouse design, high canopies 3-4m. Natural ventilation based Greenhouse, greenhouse construction team, in the side windows and roof windows used in combination, the maximum width of the greenhouse should be limited to within 50m, preferably around 30m; and mechanical ventilation based Connected Greenhouse , the maximum width of the greenhouse can be extended to 60m, but preferably limited to about 50m; length of the greenhouse, and (from the perspective of ease of operation) is preferably limited to less than 100m, greenhouse construction, but there is no strict requirements. Greenhouse is lighting buildings, greenhouses, and therefore need to have good light effect when construction of greenhouses, is a basic indicator light transmittance evaluate greenhouse light transmission properties. Transmission rate is the percentage of the amount of light penetration into the greenhouse and outdoor lighting amount. Greenhouse light transmittance by the greenhouse effect translucent material covering the light transmission properties and greenhouse skeleton shadow rate, and with a different angle of solar radiation in different seasons, the transmittance of the greenhouse are subject to change. The level of greenhouse transmittance would become direct factors choose to grow crops and crop varieties. Greenhouse, vegetable wholesale Tian Yun (certified), shed by the Cangshan County Tianrun cultivation of professional cooperatives. Cangshan County Tianrun planting cooperatives (www.tianrun8.net) Shandong Linyi, fruits leaders, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Run vegetable wholesale leadership in the field with the staff warmly welcome all inquiries negotiations to create Tianrun vegetable wholesale better future.