fabless

adj. relating to a company that designs microchips but has their production manufactured by contractors instead of owning its own fabrication plant

A fabless semiconductor company specializes in the design and sale of hardware devices implemented on semiconductor chips. It achieves an advantage by outsourcing the fabrication of the devices to a specialized semiconductor manufacturer called a semiconductor foundry or "fab." The credit for pioneering the fabless concept is given to Bernie Vonderschmitt of Xilinx and Gordon A. Campbell of Chips and Technologies.
See more at Wikipedia.org...

a semiconductor company that uses foundries for all of it’s wafer fabrication requirements.