of potential suppliers are evaluated (such as UNI EN ISO environmental certification (ECOLABEL, FSC, PEFC, recy cled plastic and other certifications), as are the means for internal management of environmental issues such as waste, packaging, use of materials with recycled or recy clable content, collection of recyclable materials for recy cling, use of materials with low emissions or low energy consumption and the manner for selecting its suppliers in accordance with environmental characteristics.