Final answer:
B2B (Business-to-Business) selling involves selling to other parties through an intermediary company.
Step-by-step explanation:
The type of selling that involves selling to other parties usually through an intermediary company is B2B (Business-to-Business). In B2B transactions, the sales are made between businesses rather than directly to individual consumers (B2C) or other types of transactions. B2B selling typically involves larger quantities, longer sales cycles, and building relationships with other businesses.