Founded in 1972 and headquartered in Jiangyin, Jiangsu, China, Jiangsu Changjiang Electronics Technology Co., Ltd. (also known as JCET Group) is a global leader in semiconductor packaging and testing services. The company also markets its own branded discrete semiconductor components under the 'CJ' or 'CJ-Elec' brand. Its product portfolio includes a wide array of diodes such as Schottky barrier diodes, fast recovery diodes, Zener diodes, and rectifier diodes. Transistor offerings cover power MOSFETs, bipolar junction transistors (BJTs), and small-signal transistors. JCET provides robust protection devices like TVS (Transient Voltage Suppressors) and ESD (Electrostatic Discharge) protection components. On the packaging and testing side, the company excels in advanced technologies including system-in-package (SiP), fan-out wafer-level packaging (FOWLP), flip-chip, and 3D packaging. JCET is consistently ranked among the top three semiconductor assembly and test service providers globally, with an estimated market share of around 14% in the outsourced semiconductor assembly and test (OSAT) market. With state-of-the-art manufacturing facilities across Asia and a strong R&D focus, the company serves a diverse client base spanning automotive, industrial, consumer electronics, and communication sectors. Its deep expertise in heterogeneous integration and chiplet packaging positions it at the forefront of next-generation electronics manufacturing.