Say who buys: “importers”, “small pet shops”, “freelance designers”. The agent uses this to tell real buyers from directories and competitors.
Say where: a country, and cities if they matter. The agent searches in that market's language.
Say what shows a need: “posted a supplier request”, “asks where to buy”, “hiring a sourcing manager”.
Say what to skip: marketplaces, retailers, or a country you don't serve. You can also save all of this as a customer profile and reuse it.