Jiangsu Changjiang Electronics Technology Co., Ltd (Cj) specializes in the semiconductor packaging and testing business,providing a complete set of solutions for chip testing, package design and package testing for domestic and overseas customers. The company was successfully listed in Shanghai Main Board in 2003 and became the first semiconductor IC packaging and testing listed company in China. Now it owns a state-level enterprise technology center. It is a national key high-tech enterprise and a high-density integrated circuit national engineering laboratory.