Power devices are used in almost all areas of the electronics manufacturing industry, including laptops, PCs, servers, monitors, and various peripherals in the computer field; mobile phones, telephones, and other various terminals and central equipment in the network communication field; traditional black-and-white household appliances and various digital products in the consumer electronics field; industrial PCs, various instruments and meters, and various control devices in the industrial control field, etc.
In addition to ensuring the normal operation of these devices, power devices can also play an effective role in energy conservation. Due to the increasing demand for electronic products and the rising energy efficiency requirements, the power device market in China has maintained a relatively fast growth rate.
According to data from the National Bureau of Statistics, in 2010, there were 498 large-scale enterprises in the power device industry in China. The industry achieved a total sales revenue of 101.511 billion yuan, an increase of 6.86% year-on-year; and a total profit of 8.527 billion yuan, an increase of 47.54% year-on-year. From the perspective of enterprise economic types, foreign-funded enterprises had the largest number, accounting for 47.19% of the industry’s total. In terms of the number of enterprises, sales revenue, and asset scale, provinces such as Jiangsu, Guangdong, and Zhejiang had the largest shares [1].