Which of the following is not a characteristic of the company's operations?

Camera models and drone models are assembled in advance; buyer orders are promptly filled from existing inventories of previously$-$produced camera and drone models that are warehoused in the facilities where they were assembled; all camera$/$drone orders are typically shipped within $2-3$ business days of receiving the order.

The cost of boxing cameras, packaging them for shipment, and freight charges average $$5$ per camera. Packaging and shipping costs for drones average $$60$ per unit.