Countless, if not all, manufacturers around the globe use the assembly line as the primary way to construct their product. But as with all things, the assembly line has its weaknesses as well. One such weakness is that sometimes there are just too many components for each product to be built efficiently. How do companies then overcome this issue? Fortunately, the process of sub-assembly has revolutionized how companies do manufacturing, especially with outsourcing their product sub-assembly. So, what is a sub-assembly, and how does it benefit companies?