The chinese workers were found crammed into accommodations lacking comfort and hygiene and were surveiled by armed security guards that were preventing the workers from leaving tge place.
Their passports were taken and their work contracts contained illegal clauses like exaustive work hours and no rest days.

Source: https://g1.globo.com/ba/bahia/noticia/2025/05/27/mpt-processa-montadora-chinesa-byd.ghtml