Arsenal-backed Fralock, a developer and manufacturer of engineered materials solutions for critical applications, completed the acquisition of Lenthor Engineering, a manufacturer of rigid-flex printed circuits. Financial terms were not disclosed. "Lenthor's advanced capabilities in flexible circuit design and manufacturing, and its leading position in high-value market segments make it a perfect complement to Fralock's core business. We believe that Lenthor's expertise and strong executive team, as well as its strong strategic customer relationships especially in our overlapping market segments, makes Lenthor an excellent addition to our expanding engineered materials solutions platform," Marc Haugen, Fralock CEO.