To facilitate ventilation and other management tasks, the greenhouse's top film and skirt film are covered separately, usually with a three-layer covering method, consisting of one top film and two skirt films on each side. The top film is 7.5 to 8.0 meters wide, and the skirt film is 1.2 meters wide. First, install the skirt films on both sides using clip slots, then cover the top film, securing the ends with spring clip slots. Between each arch, use a membrane tensioning line (strap) to hold it in place. Overlap the top film with the skirt film by 20 to 30 centimeters, pressing the top film against the outside of the skirt film. The sides of the top film can be equipped with roller rods for easy lifting to ventilate. The skirt film's ground part should be sealed with soil. Cover the greenhouse during windless weather to prevent damage to the covering or the film from wind. After covering, secure the tensioning strips.