Union Semiconductor (Hefei) Co., Ltd. is an integrated circuit packaging and testing service provider primarily engaged in outsourced semiconductor assembly and test solutions for advanced display driver integrated circuits. Founded in 2015 and headquartered in Hefei, Anhui Province, China, the company operates high-volume manufacturing facilities serving semiconductor design houses and display panel manufacturers across domestic and international markets. Its core product and service portfolio comprises front-end wafer bumping services, including 8-inch and 12-inch gold bumping, copper pillar bumping, and redistribution layer processing; wafer-level testing and circuit probing services for defect screening and electrical characterization; back-end advanced packaging solutions, including Chip-on-Glass, Chip-on-Film, and Chip-on-Plastic flip-chip assembly; and final testing, wafer grinding, dicing, and tape-and-reel packaging services. The company's packaging and testing technologies support display driver chips and related microelectronics deployed in AMOLED, OLED, and TFT-LCD displays for smartphones, ultra-high-definition televisions, laptops, tablets, automotive infotainment systems, and wearable smart devices. In recent developments, the company executed a convertible corporate bond offering to finance large-scale capacity expansion projects for 12-inch advanced-process display driver chips, focusing on expanding its 12-inch OLED gold bumping, wafer probing, and high-density Chip-on-Film packaging lines; deepened its strategic presence in the automotive electronics sector by expanding automotive-grade display driver testing capabilities; and completed a joint capital investment in affiliated semiconductor entity Hefei Xinfeng Technology Co., Ltd. to enhance supply chain integration.