A tiny factory in the hills of Santa Catarina makes parts that sit inside millions of engines across Latin America and beyond — and it quietly earns more per real of sales than most car-parts makers anywhere in the world. Full nameMetalúrgica Riosulense S.A. (brand: RIO) Ticker / exchangeRSUL3 · B3 (São Paulo) HeadquartersRio do Sul, Santa Catarina, Brazil Sector / industryConsumer Cyclical · Auto Parts Employees985 Market value (market cap)BRL 354.7M (~US$68.8M) Yearly sales (revenue, FY 2025)BRL 420.5M (~US$81.6M) Net profit (FY 2025)BRL 64.4M (~US$12.5M) Net profit margin15.0% (RT) …
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