First half revenues at Autins Group - a leading designer, manufacturer and supplier of acoustic and thermal insulation solutions for the automotive sector - rose by 14.7% to £12.25m.
Gross profits for the six months to the end of March increased by 46.5% to £4.20m with gross margins up at 34.3% from 26.9%.
Adjusted profit before tax rose to £0.35m from £0.29m).
Chief executive Michael Jennings said: "I am pleased that the group's interim results demonstrate the essence of our growth strategy by delivering solid top line growth while continuing to improve gross margins.
"Our investment programme remains on track and will ensure we are positioned to fulfil our growth plans ahead."