In business, it helps to have dependable partners who provide services you can't or don't want to handle in-house. Nobody can do it alone. Even the behemoths outsource some of their needs to other businesses.
With small business, it's even more important to find dependable partners that can grow with you as needed and still provide excellent service, even when you're just starting out and your needs are limited. Your orders or service demands may be small, but each one carries more importance.