(AOI), systems and related products. The Company’s AOI systems are used to enhance both production processes and yields for manufacturers in the semiconductor manufacturing and packaging industry and PCB and IC Substrate industry. As of December 31, 2011, the Company had sold more than 2,500 AOI systems in 34 countries worldwide. The Company's PCB customer base includes the majority of the 100 PCB manufacturers worldwide. As of December 31, 2011, the Company had sold over 300 Falcon systems to more than 25 semiconductor manufacturers.