An 'assembly line add-on' refers to any piece of machinery or technology that is added to an existing assembly line to improve production, quality, or efficiency. There are several synonyms that can be used to refer to an assembly line add-on, including machinery upgrade, production enhancement, line booster, equipment improvement, process innovation, manufacturing upgrade, and productivity increase. Regardless of the term used, the goal of an assembly line add-on is to increase the speed and accuracy of the production process, reduce waste, and improve the overall quality of the final product. The use of assembly line add-ons has become increasingly popular as manufacturers seek to improve their productivity and stay competitive in today's global economy.