What are the cleaning and maintenance methods for air conditioning and ventilation ducts?

The air-conditioning duct cleaning method is: spraying at least one layer of paint on the inner surface of the air-conditioning ventilation duct to form a coating layer on the inner surface of the air-conditioning ventilation duct. The paint forms a coating film after the solvent is naturally dried, and the inside of the air-conditioning duct The original dust and dirt on the surface are fixed in the coating film to prevent the original dust and dirt from entering the air conditioning system again; or the dust and dirt covered by the coating film and the coating film are ventilated from the air conditioner The inner surface of the pipe is peeled off and removed from the air-conditioning ventilation duct, so that the inner surface of the ventilation duct is clean.