Mohamed Aziz Tousli completed an internship at STLR, a lubricant manufacturing company owned by Vivo Energy Tunisie. During his internship, he observed lubricant production processes, performed inventory tasks in the laboratory and storage areas, and attended export operations. He also analyzed the socio-professional relationships and safety practices at STLR. The presentation evaluates his experience and provides details on STLR's operations, products, and organizational structure.