What is factory substitution? (The industry is electronic components)

Hello. Here's the thing. For example, Samsung has already made a design. Technology. Will call Quanta factory for handling.

Sometimes Samsung is responsible for purchasing raw materials for components and sending them to the foundry. The foundry is only responsible for processing.

But ... OEM is to help you purchase materials for the factory. It can be all substitutes or some substitutes.

When you don't have a complete purchasing method, you don't do it.

I hope I can help you.