Sotirios Vahaviolos

Bell Laboratories provides research and development services. It provides communications technologies including transistors, digital networking, signal processing, lasers and fiber-optic communications systems, communication satellites, cellular telephony, electronic switching of calls, touch-tone dialing and modems. The company was founded in 1925 and is headquartered in Murray Hill, NJ.

The American Society for Nondestructive Testing was founded in 1941 and provides nondestructive testing training services. The private company is based in Columbus, OH and ultimately controlled by the Government of the United States of America.

Part of MISTRAS Group, Inc., Mistras Group Ltd. is a British company that provides technology-enabled asset protection solutions. The private company is based in Cambridge, UK.

Nondestructive Testing Management Association, Inc. provides exchange of managerial, technical and regulatory information exchange services. The company was founded in 1967 and is headquartered in Boutte, LA.

Mistras Group SAS provides non-destructive testing systems and services, software and equipment. Its products include automated surface mount, AE pc board and acoustic emission sensors. The company is headquartered in Sucy-en-Brie, France.

Part of MISTRAS Group, Inc., Mistras Group Holding GmbH is a German company that provides non-destructive testing products and services. The company is based in Dusseldorf, Germany. The CEOs are Ante Kaselj and Sotirios J. Vahaviolos. The private company was founded in 2011.

QSL Quebec, Inc. engages in the operation of testing laboratory. The company was founded on March 28, 1995 and is headquartered in Levis, Canada.