Irvine-based Printronix, a developer of industrial and business printing hardware, said today that it has named Sen-Yuan (Sandy) Ro as the firm's new Vice President of Global operations. Ro was most recently at Palm, Inc., where he served as Vice President of Strategic Sourcing and Manufacturing Operations. Ro has also served at Compal Electronics, PRTM, Fortinet, and Solectron. Ro replaces C. Victor Fitzsimmons, who the firm said had retired after working at the firm for 25 years.