OEM (Original Equipment Manufacturer) refers to the model in which the brand company is responsible for designing and developing the product, and the OEM is responsible for processing and production. This is the result of economic globalization and social division of labor, Europe and the United States and other international brand manufacturers are constrained by the supply chain, production costs and other factors, often do not produce their own products, but will be the production side entrusted to the mainland China, Taiwan, Southeast Asia, Mexico, South America and other countries and regions with lower production costs of OEM factory to produce. Like Apple, Samsung, HTC, Nokia, etc. are this model, the current very hot creators of entrepreneurship is also based on this model.
Shenzhen and Dongguan have a large number of foundries. More well-known Foxconn (Apple, BlackBerry, Xiaomi, etc.), BYD (Nokia, Huawei P6, IUNI, etc.), INVISTA (Xiaomi), Huaguan (Sony, LG, etc.), Flextronics (before the collection of the Asahi Electric, Motorcycle, Tianjin, etc.) foundries. As for the pattern Well, it's really hard to say, high-end products are certainly issued by these large companies production, Foxconn is certainly the Apple Royal, low-end products are basically looking at the cost of looking at the product to find a foundry.