Former chairman of the board of trustees of Trata Brasil, Carlos Tieghi holds a degree in Chemical and Safety Engineering from Universidade Oswaldo Cruz, where he was also Assistant Professor of Chemical Engineering and Industrial Chemistry at Universidade Oswaldo Cruz, teaching in the Chemical Engineering course.

In addition to being chairman of the curator board of Trata Brasil, he was President of the Brazilian Association and the Latin American Chlorine and Alkali Association for 02 years and President of the Argentine PVC Association for more than 04 years. He was Vice President of Sindicato Sinálcalis, as well as SIRESP. He was a member of the IBPVC. He worked for more than 40 years in the companies of the Solvay Group (Belgian Multinational), where he assumed a prominent position as Senior Vice President for South America.