Shanghai QiYi semiconductor limited company located at the Shanghai Aerospace estazolam Industrial Park, the main products for the controllable silicon, bridge rectifier, thyristor, three transistor and its modules and other products, the company in 2002 from the United States to introduce key equipment at the same time, the use of foreign advanced technology, improve product quality and production efficiency, in recent years through the ISO9001-2000 quality system certification and leading products UL certification, to better meet the needs of domestic and foreign customers, we will always carry out" be strict in one&＃039;s demands, refine on" the quality policy, to ensure that the" only qualified products, customers a satisfactory".