TÜV SÜD

SGS

DQS

Intertek

The Performance Review Institute (PRI)

The Performance Review Institute (PRI) is a global, non-profit organization dedicated to advancing quality, safety, and reliability in highly regulated and high-risk industries. PRI is headquartered in the United States, with additional offices supporting organizations across Europe and the Asia-Pacific region.

Det Norske Veritas

Quality Austria

Bureau Veritas

Applus+

TÜV Rheinland

TÜV NORD