He appeared with the Togo national team in 37 international matches, scoring five times, between 1996 and 2008.
Tchangai signed to the Italian club Udinese Calcio in 1998 after appearing for Togo at the 1998 African Cup of Nations finals in Burkina Faso.
Tchangai was loaned to ND Gorica in Slovenia and later to the Dutch club De Graafschap before moving to Viterbese and Benevento[2] in the Italian lower leagues.
[3] Tchangai was a member of the Togo national team and was called up to the 2006 World Cup.
[4] Tchangai died on the evening of his 32nd birthday, on 8 August 2010, after a brief illness.