Wahl Professional Hair Clippers and Hair Trimmers. The Wahl Clipper Corporation in Sterling- Illinois- USA is the worlds largest manufacturer of electrical hair clippers with subsidiaries around the world. This traditional company was founded in 1919 and has conquered the market through quality and precision with the aim of creating products focused on the end-user. Whether looking for professional- consumer- or animal products- Wahl develops solutions to your needs. Wahl Peanut Clipper and Designer are popular.