on one side of greenhouse, install cooling pad, made of corrugated fiber paper, adding special chemical. It has a very good hygroscopicity and wetness, its chemical composition will not decompose under the inflect of water flow and air flow. Cooling pads include cooling pad paper, frame, built-in PVC pipe and so on. In order to avoid insects, dust, catkins and other outdoor matter entering or attaching to the cooling pad, and impact the effect of ventilation and cooling, install 40 mesh insect net outside of the cooling pad and inside of the sealed window. Insect net is fastened with film slot and wriggle wire.
Cooling pad sealed window: film greenhouse uses plastic film to seal out of the cooling pad. Glass greenhouse and polycarbonate sheet greenhouse uses outward window to seal out of the cooling pad. The film greenhouse uses film roller to open and close the cooling pad in winter. Glass greenhouse and polycarbonate sheet greenhouse can be closed the sealed window in winter.