7 ELECTRICALLY-OPERATED MATERIAL PROCESSING MACHINES-NAMELY, TEMPERING, ANNEALING, FUSING, DEGASSING, HARDSOLDERING MACHINES, WELDING AND BRAZING MACHINES AND LEVITATION MACHINES
9 POWER GENERATORS, STATIC UNDULATORS AND STATIC INVERTERS FOR THE HEAT TREATMENT OF MATERIALS OR FOR WELDING AND BRAZING
11 HEATING AND COOLING UNITS AND DEVICES-NAMELY, COOKING STOVES, OVENS, AND DRYERS, PARTICULARLY FOR TEMPERING MATERIALS AND TEMPERING, ANNEALING, FUSING, DEGASING MACHINES