Stetsom
Stetsom is a Brazilian brand that manufactures amplifiers and automotive accessories. It was established in 1989 and expanded its manufacturing to 8 thousand square meters. Till 2017 it has sold about 5 million amplifiers and automotive accessories in the native country plus 50 abroad countries. It has won many championships and awards in its category hence now a leading brand. The brand is ISO certified, making it the first Brazil brand in this industry.