Hot-Dip Galvanized Agricultural Greenhouses and Farm Tunnel Greenhouse Plastic Film Cultivation For Hydroponic Planting Tunnel greenhouse, is an efficient and cost-effective structure designed for protected cultivation. Characterized by its semi-circular arched frame, typically constructed from hot galvanized steel, it is covered with a single layer of polyethylene plastic film. This design excels at maximizing sunlight absorption while effectively retaining heat and humidity
