Chengfei agricultural multi-span plastic film greenhouse is specially designed for agriculture. It consists of a greenhouse skeleton, film-covering material, and supporting systems. For its skeleton, we usually use a hot-dip galvanized steel pipe because its zinc layer can reach around 220 grams/m2, which makes the structure of the greenhouse a longer use life. For its film covering material, we usually take more durable film and its thickness has 80-200 Micron. For its supporting systems, clients can choose them according to the real condition.