COMMON FAILURE FACTORS OF LEAN SIX SIGMA AND QUALITY 4.0, IN INDUSTRY 4.0 SERVICE SECTOR. International Journal of Social Sciences Bulletin, [S. l.], v. 3, n. 10, p. 24–36, 2025. Disponível em: https://ijssbulletin.com/index.php/IJSSB/article/view/1292.. Acesso em: 9 oct. 2025.