Unigroup Guoxin Microelectronics Co., Ltd. Unigroup Guoxin Microelectronics Co., Ltd. (002049.SZ) designs, develops and sells integrated circuit chips principally in China and internationally. The company offers smart card ICs such as contact and dual-interface chips; smart device ICs including reader/writer, USB key and POS security chips; special ICs comprising microprocessors, programmable devices, memories, custom chips, power circuits and SoPC chips; memory chips; FPGAs; power semiconductor devices such as super junction power MOSFETs, PLANAR VDMOS, IGBTs, IGTOs and high voltage half-bridge driver ICs; quartz crystal resonators and oscillators; and sapphire substrate materials. Its products serve industries including network communications, automotive electronics, industrial control, artificial intelligence, medical equipment and smart IoT, with subsidiaries such as Tongfang Microelectronics for smart card chips, Shenzhen Guowei for industry-specific ICs, Unigroup Tongchuang for FPGAs, Xi'an Unigroup Guoxin for memory chips and a crystal business department. Founded in 2001 and headquartered in Tangshan, Hebei, China, the company operates as a subsidiary of Tsinghua Unigroup. Unigroup Guoxin Microelectronics changed its name from Tongfang Guoxin Electronics in 2018 and maintains a leading position with over 20% global share in SIM card chips as of 2022; in October 2024, former chairman Daojie Ma transitioned to vice chairman amid leadership reorganization.