Keystone Capital completed the acquisition of Pinchin.

Keystone Capital, an investment firm, completed the acquisition of Pinchin, an environmental and engineering solutions provider. Financial terms were not disclosed. "Pinchin is an ideal fit with Keystone's investment experience. We are proud to be associated with Pinchin, a long-standing leader in environmental and engineering solutions, and we look forward to working with them to build on their successful legacy," David Greer, Keystone Capital Managing Director.