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Mr. Sa has been a member of the board of directors as a nominee of the Mariani Group since 2001. He has been a member of the board of directors of Norquisa since April 2001 and served as president of the board of directors of Norquisa from April 2001 through April 2003. He is also president of Pronor. Mr. Sá served as engineering and production manager of Dow Química S.A. from 1973 through 1984. He holds a bachelor degree in chemical engineering from the Universidade Federal da Bahia. | 