Most of their producs have the Hotbit brand on them, which was the product name of their MSX machines in Brazil.
Most of their games (all?) are bootlegs, because at that time, it was illegal to import electronics and software into Brazil. But releasing foreign software under a Brazillian brand was legal, even when pirating the software in the process.
This site contains a nice overview in Portuguese: http://www.msxhistory.msxall.com/epcom_jogos.htm