Suppliers send their quotations in response to the RFQ, and a review is undertaken where the best offer (typically based on price, availability and quality) is given the purchase order.
The supplier then delivers the products or service and the customer records the delivery (in some cases this goes through a goods inspection process).
[3][self-published source] The consumer purchases for the consumption of themselves, then they fall into this very important category class.
Components, supplies and consumable stores, spares and tools, machines and equipment and office appliance.
[3][self-published source] Government agencies or institutions are very important, critical, they purchase in bulk for public utilities.