Corporative Responsibility consists in achieving operative excellence in business management, improving those aspects in which the company has experience, providing a response to the challenges that arise and adapting itself to social needs and expectations.
 
STL wishes to continue growing in a responsible and committed manner with all its interest groups, contributing to their sustainable development and to become a company that generates employment, creates wealth and is committed to:
 
- The quality of goods and services that it offers its clients.
- The professional and personal needs of its employees.
- The establishment of a framework of trust and collaboration with its suppliers.
- The utmost vigilance as regards safety in all its activities and products.
- The wellbeing of society and, more specifically, of the communities in which it is present.
- Respecting the environment.