This type of marketplace implies cooperation between business representatives. It can be both wholesale and small deliveries but in the long term. The same goes for services. For example, the relationship between a ballpoint pen manufacturer, a distribution company, and an accounting organization can be called B2B.
All 3 participants in the procurement process are representatives of the business, but prices differ for them. The supplier earns on the difference between wholesale and small wholesale prices, the manufacturer earns on the number of goods sold, and the customer, represented by the accounting company, receives the product at reduced prices.