As part of his duties, Han has also managed the upgrade of a 100-user Token-ring to a 450-user gigabit fast Ethernet local area network with voice over Internet protocol technology. He supervised the installation of fiber-optic backbone and category 5e cables, electrical supplies, and air conditioners for server room and switches closets; and the set-up and configurations of new Compaq cluster servers, Cisco switches, HP printers, and Dell desktop computers. In addition, Han coordinated desktop and server data migration to network system switch over.

Han began his career as a Technical Assistant specializing in production and process engineering for an electric company in Malaysia. Two years later, Han became a Plant Manager overseeing the operations of a 300-person manufacturing facility for an industrial company in New York. His responsibilities grew to include facilities management. He later was promoted to Engineering Manager where he managed 25 employees in the central operations and was responsible for three manufacturing facilities with 800 employees. He was in charge of all expansion and remodeling programs which included design, construction, installation, start up, and debugging of manufacturing facilities. He followed that up as a Project/General Manager for two separate manufacturing companies, where he was heavily involved with the design and construction of their manufacturing facilities.