Hsinchu, Taiwan, February 24, 2022 - United Microelectronics Corporation (NYSE: UMC; TWSE: 2303)(“UMC”) today announced its 8-inch wafer fab subsidiary, HeJian Technology (Suzhou) Co., resumed production.

HeJian Technology suspended production on February 14 after an employee contracted COVID-19. Since then, employees of HeJian Technology have undergone multiple PCR tests and all results were negative. The company resumed production immediately after obtaining approval from the authorities. 

HeJian Technology fully supports the government’s epidemic prevention policies. Through commitment to the highest standards and appropriate contingency measures, the company strives to ensure the safety and health of its employees, and contribute to a safer environment for its community. This incident has no material impact on the company's financial business.