High quality multi span tunnel agricultural plastic film greenhouse cover

Multi-span plastic film greenhouse is widely used in the cultivation of tomato,vegetables, fruits and flowers. It can provide the conditions of suitable illumination, moisture and temperature, raising the output and resisting the natural disasters. It can bring forward or backward the provision, remitting the contradictions of provision and demand. Multi-span plastic film greenhouse is composed by hot galvanized pipe with three layers film for the covering material. The frame structure is simple, cheap cost and easy to install. Main Features： 1) Simple and strong structure ,easy to installation and maintainessing 2) The greenhouse used for protect from the rain,preserve moisture,insect prevention,cooling,keep warm and so on. 3) Excellent hot galvanized steel structures and accessories , anti-corrosion . 15 year using life 4) Ventilation and insect nets can give your planting under comfortable situation. Increasing yield 5) Best after sales service and 15years experience in greenhouse Steel structure： Hot galvanized steel structures and accessories , anti-corrosion . 15 year using life . The main column and arch pipe according to the wind load and snow load Cover material ： PE film( thickness is 120micron,150micron,200micron,customize) Anti-drip,Anti-fog,Anti-UV for all the time Life time:4-8years Ventilation system： Two sides ventilation by manual/electric roll up machine Roof vebtilation by electric motor 40mesh insect net will be offered for vents Cooling system： The cooling system is composed by cooling fan and cooling pad, which can maintain the temperature in the greenhouse lower than outside Cooling fan: dimension: 1380mm x 1380mm x 400mm(W*H*D) Cooling pad: Height:1-2m,can customize according to customers' requirement Thickness:100mm or 150mm Shading system： The shate rate have 65%,75%,85%,95% and so on There are two types: one is ribbon-like filament,another is round wire. The function is blocking the strong light into the greenhouse, reduction of temperature. Irrigation system ： There are drip irrigation,drip arrow irrigation and spray system to choose. Heating system： There are many types to heat the temperature, one is to use boiler, one is to use electric,gas,boil,biomass and oil.