Mushroom greenhouse, vegetable greenhouse 1.Framework The whole greenhouse is constructed with hot galvanized steel pipe, anti-rust treated, and guarantee for 10 years. The pipe thickness is 1.2mm, with 32mm diameter. The connections of the greenhouse are by claw and clamp, bolts and nuts etc, no welding needed. 2.Covering The greenhouse is covered with 150 micro thicknesses, 5-ply plastic film with UV-protected function, 3-year warranty and 5-year life. Remarks: 150/200 micron thickness poly film is available. 3.Ventilation Auto or manual controlledfilm roll-upsystem on both two sides for ventilation. 4.Door Bisec door, galvanized steel frame, covered by film. Remarks: Cooling system, heating system, irrigation system, lighting system etc is also optional.