Large steel sheds with cloth ceilings are not acceptable. Large steel sheds, especially industrial steel sheds, need to use durable and waterproof ceiling materials. The cloth ceiling is not suitable for this requirement. Cloth ceiling is used in indoor residential or commercial space, which is used to increase decorative effect, absorb sound and adjust indoor temperature. For the ceiling of large steel shed, it is more suitable to use metal or other materials with strong durability and good waterproof performance. This can ensure that the ceiling can withstand harsh environmental conditions and provide the required protection and safety.