OEM, OEM is the abbreviation of English Original Equipment Manufacturer, in accordance with the literal meaning of the word, should be translated into the original equipment manufacturer, refers to a manufacturer according to the requirements of another manufacturer, for the production of products and product accessories, also known as the customized production or authorization of OEM production. That is, on behalf of outsourced processing, but also on behalf of subcontract processing. Domestic customary called collaborative production, three to processing, commonly known as processing trade.