Before coming to us, a number of our customers complained of tolerance stack problems between vendors which resulted in assembly problems.
First and foremost, products that leave our facility are within within tolerance. We do not make amateur mistakes like shipping you products made from the wrong material, or attempting to hide our mistakes and releasing you tons of product that is out of specification.
But ultimately, most of our customers don't care about the individual components that much... they care about the final product. They want the opponents to go together and know that the product is good. And in order to do this, most of our customers have been forced to create in-house assembly departments.
Why fight with assembly in all the headaches that come with it if you buy your assembled products from Central, all you need to worry about is selling your product.