The company and city officials cautioned that a final decision has not been made. But there was clearly enthusiasm in Round Rock this week about the possibility of the project. As one exec put it, “KoMiCo is proud to partner with the city of Round Rock in further establishing the Silicon Hills as the most technologically advanced semiconductor manufacturing region in the United States.” If the expansion moves forward, it would occur at 201 Michel Angelo Way, near where I-35 intersects the State Highway 45 toll road.