At the end of the assembly line, these assembled goods are standardized tested to see if they meet certain criteria before they are moved to the next advanced assembly line.
In the typical production supply chain for consumer products, of which apparel production is a good example, the higher-value, pre-manufacturing activities like designing, engineering, and branding, and post-manufacturing activities like marketing, warehousing, transporting, and retailing happen in the United States, while the mostly lower-end manufacturing and assembly activities take place abroad.