Advertising Sheet is a term used to describe a LEAFLET, which is a small booklet or pamphlet that is used to promote a product, service, or event. Leaflets are typically distributed in public places such as streets, stores, and events, and can also be sent through the mail. They are often used to provide information about a company or organization, and can include images, text, and contact information. Leaflets are an effective way to reach potential customers and can be used to create brand awareness.