An original equipment manufacturer
, or OEM
, manufactures products or components which are purchased by a second company and retailed under the second company's brand name. It is a form of outsourcing.
Confusingly, OEM may also refer to a company that purchases a component made by a second company for use in its own product, or sells the product of the second company under its own brand name. Companies who follow these practices are better termed value added resellers or resellers, respectively.