The natural gas consumed by the industrial undertaking in support of its primary activities in the appropriate sub-sectors: iron and steel (ISIC Group 241), chemical and petrochemical (ISIC Divisions 20 and 21), non-ferrous metals (ISIC Group 242), non-metallic minerals (ISIC Division 23), transport equipment (ISIC Divisions 29 and 30), machinery (ISIC Divisions 25, 26, 27 and 28), mining (excluding energy producing industries) and quarrying (ISIC Divisions 07 and 08), food, beverages and tobacco (ISIC Divisions 10, 11 and 12), pulp, paper and printing (ISIC Divisions 17 and 18), wood and wood products (other than pulp and paper) (ISIC Division 16), construction (ISIC Divisions 41, 42 and 43), textile and leather (ISIC Divisions 13, 14 and 15), and not elsewhere specified industries.