 Among the companies headquartered in the city we can list steel producer Açominas (held by Gerdau, one of the largest multinationals originated in Brazil); Usiminas; Belgo-Mineira (held by Arcelor); Acesita (partially held by Arcelor); mobile communication Vivo; and Telecom Italia Mobile, Dasein executive search, executive coaching company, as well as the NYSE-listed electrical company CEMIG.Leading steel product makers Sumitomo Metals of Japan and Vallourec of France have also plans to construct an integrated steel works on the outskirts of the city.There are also a large number of small enterprises in the technological sector with regional to nationwide success, particularly in the fields of computing and biotechonology.