The document discusses different types of hoardings used for advertising. It describes bulletins and posters as the major types of hoardings, with bulletins being the largest and located primarily on highways. Other types discussed include painted, digital, mobile, inflatable, and multi-purpose hoardings. It also discusses contractors who provide hoarding space and printers who handle printing of ads for hoardings using various techniques like letterpress, intaglio, lithography and flexography.