Light Deprivation Greenhouses Main Structure : Hot galvanized steel frame, durable for 15-20 years. It is rust-proof, durable, easy to install , and has strong toughness, good adhesion. Blackout system: 100% shading rate balckout curtain, Screen are movable. You can open or close it according to your local weather condition. You can choose the cooling system, irrigation system, circulation system, heating system, seeding bed, according to your requirement. Conntact us