Large Multi-span Poly Tunnel Film Agricultural Tomato Growing Greenhouse

The multi-span greenhouse is an economical greenhouse, which is very popular among users for its beautiful arc shape and low cost. The arc-shaped roof is beautiful and the sight is smooth. The structure uses a small amount of steel and has good thermal insulation performance. The manufacturing cost is relatively low, and it is an economical greenhouse suitable for most areas. Double-layer film greenhouses are mostly used in the northern region, and single-film greenhouses are mostly used in the southern region. It can get the maximum light in the visible light range of 0.4-0.7 microns. After the film is inflated, a thick air bag can be formed, which can effectively prevent heat loss and prevent the invasion of cold air. The use of double-layer inflatable film can greatly improve the thermal insulation performance of the greenhouse and save operating costs. The top of the covering material is covered with polyethylene drip-free long-life film, the outer layer is UV-proof, and the inner layer is anti-condensation; the surroundings can be covered with polyethylene drip-free long-life film or polycarbonate hollow board according to user needs.

 
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