Heaters; floor heaters; underfloor heaters; heaters for deicing floors, surfaces or the ground; room heaters; heating elements
Environmental Control Apparatusmaterial in the form of bricks, tiles, sheets or mortar for screening electromagnetic interference; material comprising a blend of carbon and iron oxides (ferrite) in the form of bricks, tiles, sheets or mortar for screening electromagnetic interference; electroconductive materials in the form of bricks, tiles, sheets or mortar; electroconductive cementitious materials in the form of bricks, tiles, sheets or mortar
Nonmetallic Building Materials