A Broken Arrow company cut the ribbon on a new facility Wednesday.
Air Hygiene celebrated the opening of its headquarters, which is just south of 61st Street, between Aspen and Elm.
The company tests exhaust and emissions, so businesses know they meet EPA requirements.
Air Hygiene has the only indoor smoke stack in the world, which they use for research and development, as well as training.
"We've started Air Hygiene University," said Quinn Beirman, of Air Hygiene. "It's expanding, not only to our own employees and really investing back in them, but to our customers, even our competitors."
Air Hygiene currently employs 52 people, and the company plans to add more workers in the near future.