Zhejiang Guidu Power Electronic Co., Ltd. as a professional manufactuer of semiconductor chips and devices, was  founded  in 1983. The main products  include  thyristors, diodes  (disc, stud and plastic package type), triacs, power modules, and solid state relay (SSR). In addition, as one of  the national high-tech enterprises and  the governing units of  the China Electrical Equipment  Industrial Association  (CEEIA)- Power Electronics Branch, Guidu has a significant influence in the industry of power semiconductors.
The  factory strictly adopt  ISO9001:2008 standards of production and quality management.  It also pursuits  the corporate culture of  technological  innovation, with  the cademic support  from several  leading  institutes and scholars  in China, such as Tsinghua university  lab and Xi'an's national reaserch institute. So far, it possesses a total of 2 patents of utility model and 4 patents of invention. Its production workshop covers an area of 8,000 square meters, with a modernized 100-thousand-grade purification workshop.