For technical certificates discriminating the services rendered and the level of satisfaction of both the customer and final users, click on the respective logo

QUALITYMARK		MCG		FUTURA		AMIL		BANCO BRJ
EDITORA CAMPUS				CETIP				C. NIELSEN
O DIA				EDIOURO				R. DE CHARME
EMBRATEL				SERPRO		MOMSEN, LEONARDOS & CIA