JAD Group Inc. was founded in 1998 in Chicago, IL and has since expanded sales and services worldwide. We are a reliable and trustworthy surplus and legacy equipment market partner serving our clients in the semiconductor industry. We buy and sell used back-end test equipment and the parts to support test operations. As the Authorized Legacy Service Provider of Advantest test system platforms upon EOS (End of Service), we can sell and support many Advantest test systems. We offer board repair services for Advantest and Catalyst testers. We are also an Advantest authorized repair and calibration center for Advantest instruments