Electrical and electromechanical assembly services provide board-level assembly, chassis and rack panel wiring, and front panel assembly services on a contractual basis. They are located across the United States and around the world. Electrical and electromechanical assembly services vary in terms of capabilities. Companies that provide design assistance can help with concepts and material sourcing, layout and manufacturing techniques, and computer aided design (CAD). They may also be able to help upgrade or redesign, re-evaluate or modernize existing products to improve performance and/or reduce manufacturing costs. Some electrical and electromechanical assembly services provide rapid prototyping or short-run manufacturing prior to mass production. Others handle all aspects of the part procurement and manufacturing processes. Electrical and electromechanical assembly services with just-in-time manufacturing capabilities can produce parts on demand. Full system assembly (box build) services handle enclosures, panels, racks and test fixtures. Subsystem assembly services handle smaller subsets with board interconnections, chasing wiring, and motor wiring. Electrical and electromechanical assembly services with formal quality assurance or testing processes ensure the quality of all manufactured products and, in some cases, provide test results.