A Brief History of the Marque
Initially a dealership named A. Guidi & Figlio in Bologna, in 1977 Guglielmo Guidi began production of four-speed mopeds including Furia, Ribot, Sirlad and Tornese models. The firm also built offroad machines of 125cc (Hiro) and 250cc, and minibikes.
Interesting history by the founder of the company, Guglielmo Guidi, here: lcer.it.
Sources: MC Storico Conti, lcer.it, et al