In the production process, they are more likely to keep up with the latest, high tech equipment and state-of-the-art technology. Suppose there is a problem with one of the components. If the manufacturer is producing all the components in-house, it may take a while before it is found – and maybe even after it has gone to the end-user.
In addition, the problem has to be solved using in-house resources and capital. When working with a contract manufacturer, in many cases component flaws have already been caught long before they reach the OEM – often due to experiences with other manufacturers. Often a third-party view of the problem is what’s needed, and the resolution is solely on the shoulders of that third-party.