1. Structure The main structure is built by hot galvanized steel pipe, venlo shape Anti-rust for 15~20 years Top height: 4. Technical parameters Wind load: 0.6kn/m2 Snow load: 0.5kn/m2 Suspended load: 0.2kn/m2 Max. Rainwater running capacity: 140mm/h 4. Feature Nice exterior and stable structure The structure is covered by polycarbonate sheet, which is featured for excellent warm keeping effect Large area of greenhouse lighting, indoor light uniform, high utilization rate 6. Optional Side or roof ventilation system, cooling system, irrigation system, shade system, heating system are optional