Shenzhen SI Semiconductor Co., Ltd. was established in February 1988. The company is a professional power semiconductor chip and device manufacturer invested by Shenzhen SEG Group Co., Ltd., Shenzhen Xun jie Investment Co., Ltd., and Shenzhen Yuan zhi Investment Co., Ltd. In 2010, it was transformed into a joint-stock company, In August 2015 it was listed on the National Equities Exchange and Quotations. The company has more than 950 employees and has a power semiconductor device production park covering an area of 100,000 square meters. The company is a high-tech enterprise with independent design, development, production and sales, and it is also a major enterprise in the domestic power device industry.