They started out producing tennis balls back in the 1920s, before entering the tennis racket market in 1933 with the legendary Maxply tennis racket, later used by the likes of Virginia Wade, Rod Laver & John mcEnroe. More recently, Dunlop rackets have been used players like Jamie Murray, Kevin Anderson, Miomir Kecmanovic, Jack Draper & Liam Broady.
https://tenniscreative.com/best-tennis-racket-brands