▎ 摘　　要

NOVELTY - A polystyrene antibacterial ventilation duct comprises a duct main portion, a flange, and a riveting solid material. The duct main portion is formed by bending and forming a double-layer graphene steel plate. The riveting solid material is filled into the pipeline duct main portion through the flange. The double-layer graphene steel plate is filled with a phenolic heat preservation board. USE - Polystyrene antibacterial ventilation duct is useful for providing anti-bacterial and anti-viral functions. ADVANTAGE - The energy-saving polystyrene antibacterial ventilation duct is economical, effectively inhibits the variety of microbial growth in ventilation pipe, has excellent air purification function, ventilation function, flame retardant property, heat preservation property, and anti-corrosion and anti-aging properties.