(ii) Sustainable use of resources The sustainable use of resources is one of the main goals of the Group’s environmental policy and, therefore, its facilities: (i) have cooling towers to save water and energy; (ii) optimise their processes; (iii) are committed to the progressive replacement of old equipment with other more energy-efficient equipment; (iv) have systems for reusing process water; (v) replace the boilers to suit the In reason total waste increased.