Wei Chi photovoltaic solar greenhouses greenhouse construction equipment technical requirements, no external shade of Greenhouse: Requires span of 7 to 8 meters, a height of not less than 2.5 meters gutter, roof height of not less than 4 meters, the main column using non less than 70 × 50 × 2 毫米 rectangular galvanized steel or galvanized steel diameter 50 × 2 毫米 circular pipe, spaced not more than 4 meters, the top arch with a diameter of 30 × 1.2 毫米 galvanized steel arch spaced not more than 1.2 meters. 2, the outer shade of Greenhouse: outside shade height of not less than 4.5 meters, imported nylon mesh cable tray. Same steel structure with no external shading of Greenhouse Facilities