1 INDUSTRIAL GASES, INCLUDING OXYGEN, NITROGEN, ARGON, NITROUS OXIDE, HELIUM, CARBON DIOXIDE, HYDROGEN, KRYPTON AND XENON
4 ACETYLENE AND CONTAINERIZED GAS FOR FUEL PURPOSES
5 GASES FOR MEDICAL PURPOSES SUCH AS PURE OXYGEN AND COMPRESSED AIR
6 BOTTLES AND CONTAINERS FOR STORING GASES UNDER PRESSURE AT LOW TEMPERATURES
7 GAS PRODUCTION PLANTS, GAS COMPRESSORS, WELDING MACHINES, OXY-CUTTING MACHINES, ELECTRODE HOLDERS, CUTTING AND WORKING MACHINES, LIQUIFIED GAS PUMPS AND TURBINES
9 WELDING POSITIONING DEVICES, ELECTRODES, PRESSURE REGULATORS AND GAUGES