Semi-closed GreenhouseSemi-close Greenhouse have high controllability, more uniform environment condition, lower ventilation rate, with positive air pressure and energy saving. The benefits of semi-close greenhouse are:●Complete system with perfect greenhouse climate and less plant diseases.●Optimum air distribution over a longer distance●Gradually to decide when to expand the system●Over pressure prevents insects in the greenhouse ●Energy saving thus low energy coast●High CO2 efficiency●Low maintenanceSemi-close Greenhouse in Beijing, ChinaGreenhouse built in 2015 for tomato and cucumber production greenhouse.Total area: 3680sqm; Span: 8m x10 spans; Bay: 5m x 9 bays   Quality Manage System Certificate Since 2009