Long Technology was established in 1972, in 2003 successfully listed on the Shanghai Stock Exchange motherboard. After more than 40 years of development, Changjiang Electronics has become the No. 1 and No. 3 integrated circuit packaging and testing enterprise in China. Changjiang Technologies provides packaging design, product development and certification, as well as a full range of professional manufacturing services ranging from chip testing, packaging to finished product testing and shipping. It has been appraised as one of the key national high-tech enterprises, China's top 100 electronics companies, Strategic alliance chairman unit, China Famous Brand, China's export product quality demonstration enterprises, with the only high-density integrated circuit National Engineering Laboratory, the state-level enterprise technology center, post-doctoral research station.