PICKLING PREPARATIONS FOR METAL SURFACES; FLUXES AND OTHER AUXILIARY PREPARATIONS FOR SOLDERING, BRAZING OR WELDING; SOLDERING, BRAZING OR WELDING POWDERS AND PASTES CONSISTING OF METAL AND OTHER MATERIALS; PREPARATIONS OF A KIND USED AS CORES OR COATINGS FOR WELDING ELECTRODES OR RODS
ANTI-KNOCK PREPARATIONS, OXIDATION INHIBITORS, GUM INHIBITORS, VISCOSITY IMPROVERS, ANTI-CORROSIVE PREPARATIONS AND OTHER PREPARED ADDITIVES, FOR MINERAL OILS (INCLUDING GASOLINE) OR FOR OTHER LIQUIDS USED FOR THE SAME PURPOSES AS MINERAL OILS