AGS Plasma Systems, founded in 1991, is a manufacturer of vacuum plasma systems used for etching and deposition of patterns needed in the microelectronics and optoelectronics industries. It sells and services plasma systems and has designed and installed a variety of product enhancements. The company also supplies Windows-based process tool controllers to increase graphical user interface automation of existing vacuum systems. The company provides manufacturer-approved parts for plasma systems, consulting services, emergency repairs, preventive maintenance service contracts and support agreements. AGS, originally known as A.G.Services, is located in San Jose, Calif.