In Colombia, the programme is organised through an initiative called Responsabilidad Integral, in which some 60 chemical companies have committed to work together to significantly and continuously improve their environmental, health and safety performance, and that of their processes and services and of their products throughout their life cycle, with a view to fostering responsible management of chemicals. It is active in the public and private sector alike. Since 1998, it has established alliances with 35 public and private sector institutions, had worked with over 1 400 companies and had trained over 12 000 people in cleaner production (OECD/WTO, 2011). The economic benefits to the supplier thus are no longer linked with volume of product sold. Chemical consumption becomes a cost rather than a revenue factor for the supplier, providing an incentive to optimise the use of the chemical and recycling. The National Centre for Cleaner Production and Environmental Technology began work on chemical leasing in 2008.