Escola Politécnica da Universidade de São Paulo, Brazil has recently opened research exchange opportunities.
The Research Training in Engineering Laboratory for International Students gives the opportunity to the international student to complete a 3 to 6 months internship at one laboratory of research center at Escola Politécnica da Universidade de São Paulo.
Current opportunities:
https://timeassociation.org/positions/
It is possible to apply for a Lab different from the ones listed:
https://www.poli.usp.br/internacional/exchange-student-study-at-poli/exchange-programs/research-exchange-program




