ONE-SOURCE SOLUTION FOR ASSEMBLIES. JUST-IN-TIME. On time and at a competitive cost, we deliver high-quality assemblies just when you need them. Our products are built to your precise specifications. Every unit. Every time. Since 1993, Assembly Systems has offered OEM assembly, subassembly, parts kitting and a full range of support services. We focused initially on the bus coach industry, but our capabilities have expanded significantly. Today, Assembly Systems offers a variety of fully managed assembly work for dozens of customers. We also have great expertise in upfitting heavy trucks with a variety of equipment, from crane assemblies to railroad packages.