Oem is the abbreviation of English original equipment manufacturer, which means original equipment manufacturer. This term is usually used to describe parts and products designed and manufactured by other companies and supplied to third-party merchants, rather than directly sold to end consumers. As a business model, oem usually involves many links in the supply chain, such as parts manufacturers, assemblers and distributors. Oem business usually requires suppliers to provide products with high quality and low price to meet the needs of customers.

In the field of computer and electronic equipment, oem usually refers to the manufacturer of electronic equipment. These manufacturers usually sell their products under their own brands, but they also contract for other companies. For example, the mobile phones produced by Apple are made by OEM suppliers such as Foxconn. Similarly, computers produced by HP and Dell may also be produced by other OEMs, so that they can sell them under their own brands.

Oem can also refer to companies that create and manufacture their own branded products in different industries. This includes automobile manufacturers, home appliance manufacturers and other industrial manufacturers. These companies usually adopt oem mode and use external expertise and technology to provide their products with higher value and competitive advantage. Oem manufacturers must also abide by specific laws and standards to ensure that their products meet quality, performance and safety standards.