Tunnel film greenhouse

Tunnel film greenhouse -Arch roof structure, Span:8M - Wind load: 0.45 KN/M2, Snow load: 0.35 KN/M2 -The frame works structure is consisting of main poles, tension rods, lock grooves and various joint levers and joints. It is assembly style without any welding point. All material is hot galvanized with zinc cover 275g/M2. - Covering is 3 layers extruding films,the outer layer has the function of dustproof and the inner layer anti-dripping. - Ventilation by rolling up the films by the auto or manual roller.