Agere built a $165 million World Headquarters building in Hanover Township, Lehigh County, Pennsylvania. This building was started in 2001 and completed in 2003. It brought together research and development facilities from Breinigsville and Muhlenberg Township. It absorbed about 2,000 workers from these two facilities. Agere Systems tried unsuccessfully to sell its Union Boulevard plant in Allentown, where the first commercial production line for transistors was set up in 1951. Agere Systems demolished the manufacturing part of the Union Boulevard facility. The company continues to use the offices and wet labs in the remaining part of the building. Its headquarters building is nearby in Hanover Township, Pennsylvania. In 2003, Agere Systems sold the chip plant and research center in Breinigsville to TriQuint Semiconductor, which also bought the company's fiber-optic components division. The facility, now under different ownership, is a multi-tenant technology park.