The Group manufactures and sells power discrete semiconductors under its own 『『PFC'』 brand into the PRC, Taiwan and other Asian regions markets.
The Group sells some of its EPI to the PRC Foundry Company, a wafer foundry in Shenzhen, the PRC, which is one of the five largest suppliers of the Group during the Track Record Period, and is one of the five largest customers of the Group for the three months ended 31 March 2016. Please refer to the section headed 『『Business — Customers — Trading of raw materials'』 in this document for further details on the PRC Foundry Company and the transactions between the Group and the PRC Foundry Company during the Track Record Period.
The Group maintains its own research and development team in Taiwan, with a primary focus on improvement of product performance, new product and technology development. The Group's power discrete semiconductors utilised its own patented device structure and manufacturing method, developed by the Group's in-house research and development team. As at the Latest Practicable Date, the Group held 46 patents registered in the USA, Taiwan and the PRC with respect to the device structure and/or manufacturing method of its power discrete semiconductors.