11 Industrial furnaces; industrial furnaces made of precious metal-containing materials; melting furnaces for industrial purposes; melting furnaces for industrial purposes made of precious metal-containing materials; Crucibles, namely, iridium-based crucibles, ruthenium-based crucibles, platinum-based crucibles, palladium-based crucibles, rhodium-based crucibles, gold-based crucibles, silver-based crucibles, crucibles for single crystal growth, after heaters for single crystal growth, reflectors for single crystal growth, seed holders for single crystal growth, crucibles for glass melting, tanks for glass melting, equipment for glass melting, stirrers for glass melting, pipes for glass melting, electrodes for glass melting, melting crucibles for industrial purposes, iridium-based crucibles for single crystal growth, ruthenium-based crucibles for single crystal growth, platinum-based for single crystal growth crucibles, palladium-based crucibles for single crystal growth, rhodium-based crucibles for single crystal growth, gold-based crucibles for single crystal growth, silver-based crucibles for single crystal growth, iridium-based after heaters for single crystal growth, ruthenium-based after heaters for single crystal growth, platinum-based after heaters for single crystal growth, palladium-based after heaters for single crystal growth, rhodium-based after heaters for single crystal growth, gold-based after heaters for single crystal growth, silver-based after heaters for single crystal growth, iridium-based reflectors for single crystal growth, ruthenium-based reflectors for single crystal growth, platinum-based reflectors for single crystal growth, palladium-based reflectors for single crystal growth, rhodium-based reflectors for single crystal growth, gold-based reflectors for single crystal growth, silver-based reflectors for single crystal growth, iridium-based seed holders for single crystal growth, ruthenium-based seed holders for single crystal growth, platinum-based seed holders for single crystal growth, palladium-based seed holders for single crystal growth, rhodium-based seed holders for single crystal growth, gold-based seed holders for single crystal growth, silver-based seed holders for single crystal growth, iridium-based crucibles for glass melting, ruthenium-based crucibles for glass melting, platinum-based crucibles for glass melting, palladium-based crucibles for glass melting, rhodium-based crucibles for glass melting, gold-based crucibles for glass melting, silver-based crucibles for glass melting, iridium-based tanks for glass melting, ruthenium-based tanks for glass melting, platinum-based tanks for glass melting, palladium-based tanks for glass melting, rhodium-based tanks for glass melting, gold-based tanks for glass melting, silver-based tanks for glass melting, iridium-based equipment for glass melting, ruthenium-based equipment for glass melting, platinum-based equipment for glass melting, palladium-based equipment for glass melting, rhodium-based equipment for glass melting, gold-based equipment for glass melting, silver-based equipment for glass melting, iridium-based stirrer for glass melting, ruthenium-based stirrer for glass melting, platinum-based stirrer for glass melting, palladium-based stirrer for glass melting, rhodium-based stirrer for glass melting, gold-based stirrer for glass melting, silver-based stirrer for glass melting, iridium-based pipe for glass melting, ruthenium-based pipe for glass melting, platinum-based pipe for glass melting, palladium-based pipe for glass melting, rhodium-based pipe for glass melting, gold-based pipe for glass melting, silver-based pipe for glass melting, iridium-based electrode for glass melting, ruthenium-based electrode for glass melting, platinum-based electrode for glass melting, palladium-based electrode for glass melting, rhodium-based electrode for glass melting, gold-based electrode for glass melting, silver-based electrode for glass melting, iridium-based melting crucible for industrial purposes, ruthenium-based melting crucible for industrial purposes, platinum-based melting crucible for industrial purposes, palladium-based melting crucible for industrial purposes, rhodium-based melting crucible for industrial purposes, gold-based melting crucible for industrial purposes, silver-based melting crucible for industrial purposes; crucibles made of precious metal-containing materials, namely, iridium-based crucibles, ruthenium-based crucibles, platinum-based crucibles, palladium-based crucibles, rhodium-based crucibles, gold-based crucibles, silver-based crucibles, crucibles for single crystal growth, after heaters for single crystal growth, reflectors for single crystal growth, seed holders for single crystal growth, crucibles for glass melting, tanks for glass melting, equipment for glass melting, stirrers for glass melting, pipes for glass melting, electrodes for glass melting, melting crucibles for industrial purposes, iridium-based crucibles for single crystal growth, ruthenium-based crucibles for single crystal growth, platinum-based for single crystal growth crucibles, palladium-based crucibles for single crystal growth, rhodium-based crucibles for single crystal growth, gold-based crucibles for single crystal growth, silver-based crucibles for single crystal growth, iridium-based after heaters for single crystal growth, ruthenium-based after heaters for single crystal growth, platinum-based after heaters for single crystal growth, palladium-based after heaters for single crystal growth, rhodium-based after heaters for single crystal growth, gold-based after heaters for single crystal growth, silver-based after heaters for single crystal growth, iridium-based reflectors for single crystal growth, ruthenium-based reflectors for single crystal growth, platinum-based reflectors for single crystal growth, palladium-based reflectors for single crystal growth, rhodium-based reflectors for single crystal growth, gold-based reflectors for single crystal growth, silver-based reflectors for single crystal growth, iridium-based seed holders for single crystal growth, ruthenium-based seed holders for single crystal growth, platinum-based seed holders for single crystal growth, palladium-based seed holders for single crystal growth, rhodium-based seed holders for single crystal growth, gold-based seed holders for single crystal growth, silver-based seed holders for single crystal growth, iridium-based crucibles for glass melting, ruthenium-based crucibles for glass melting, platinum-based crucibles for glass melting, palladium-based crucibles for glass melting, rhodium-based crucibles for glass melting, gold-based crucibles for glass melting, silver-based crucibles for glass melting, iridium-based tanks for glass melting, ruthenium-based tanks for glass melting, platinum-based tanks for glass melting, palladium-based tanks for glass melting, rhodium-based tanks for glass melting, gold-based tanks for glass melting, silver-based tanks for glass melting, iridium-based equipment for glass melting, ruthenium-based equipment for glass melting, platinum-based equipment for glass melting, palladium-based equipment for glass melting, rhodium-based equipment for glass melting, gold-based equipment for glass melting, silver-based equipment for glass melting, iridium-based stirrer for glass melting, ruthenium-based stirrer for glass melting, platinum-based stirrer for glass melting, palladium-based stirrer for glass melting, rhodium-based stirrer for glass melting, gold-based stirrer for glass melting, silver-based stirrer for glass melting, iridium-based pipe for glass melting, ruthenium-based pipe for glass melting, platinum-based pipe for glass melting, palladium-based pipe for glass melting, rhodium-based pipe for glass melting, gold-based pipe for glass melting, silver-based pipe for glass melting, iridium-based electrode for glass melting, ruthenium-based electrode for glass melting, platinum-based electrode for glass melting, palladium-based electrode for glass melting, rhodium-based electrode for glass melting, gold-based electrode for glass melting, silver-based electrode for glass melting, iridium-based melting crucible for industrial purposes, ruthenium-based melting crucible for industrial purposes, platinum-based melting crucible for industrial purposes, palladium-based melting crucible for industrial purposes, rhodium-based melting crucible for industrial purposes, gold-based melting crucible for industrial purposes, silver-based melting crucible for industrial purposes; crucibles made of precious metals with less metal content, namely, iridium-based crucibles, ruthenium-based crucibles, platinum-based crucibles, palladium-based crucibles, rhodium-based crucibles, gold-based crucibles, silver-based crucibles, crucibles for single crystal growth, after heaters for single crystal growth, reflectors for single crystal growth, seed holders for single crystal growth, crucibles for glass melting, tanks for glass melting, equipment for glass melting, stirrers for glass melting, pipes for glass melting, electrodes for glass melting, melting crucibles for industrial purposes, iridium-based crucibles for single crystal growth, ruthenium-based crucibles for single crystal growth, platinum-based for single crystal growth crucibles, palladium-based crucibles for single crystal growth, rhodium-based crucibles for single crystal growth, gold-based crucibles for single crystal growth, silver-based crucibles for single crystal growth, iridium-based after heaters for single crystal growth, ruthenium-based after heaters for single crystal growth, platinum-based after heaters for single crystal growth, palladium-based after heaters for single crystal growth, rhodium-based after heaters for single crystal growth, gold-based after heaters for single crystal growth, silver-based after heaters for single crystal growth, iridium-based reflectors for single crystal growth, ruthenium-based reflectors for single crystal growth, platinum-based reflectors for single crystal growth, palladium-based reflectors for single crystal growth, rhodium-based reflectors for single crystal growth, gold-based reflectors for single crystal growth, silver-based reflectors for single crystal growth, iridium-based seed holders for single crystal growth, ruthenium-based seed holders for single crystal growth, platinum-based seed holders for single crystal growth, palladium-based seed holders for single crystal growth, rhodium-based seed holders for single crystal growth, gold-based seed holders for single crystal growth, silver-based seed holders for single crystal growth, iridium-based crucibles for glass melting, ruthenium-based crucibles for glass melting, platinum-based crucibles for glass melting, palladium-based crucibles for glass melting, rhodium-based crucibles for glass melting, gold-based crucibles for glass melting, silver-based crucibles for glass melting, iridium-based tanks for glass melting, ruthenium-based tanks for glass melting, platinum-based tanks for glass melting, palladium-based tanks for glass melting, rhodium-based tanks for glass melting, gold-based tanks for glass melting, silver-based tanks for glass melting, iridium-based equipment for glass melting, ruthenium-based equipment for glass melting, platinum-based equipment for glass melting, palladium-based equipment for glass melting, rhodium-based equipment for glass melting, gold-based equipment for glass melting, silver-based equipment for glass melting, iridium-based stirrer for glass melting, ruthenium-based stirrer for glass melting, platinum-based stirrer for glass melting, palladium-based stirrer for glass melting, rhodium-based stirrer for glass melting, gold-based stirrer for glass melting, silver-based stirrer for glass melting, iridium-based pipe for glass melting, ruthenium-based pipe for glass melting, platinum-based pipe for glass melting, palladium-based pipe for glass melting, rhodium-based pipe for glass melting, gold-based pipe for glass melting, silver-based pipe for glass melting, iridium-based electrode for glass melting, ruthenium-based electrode for glass melting, platinum-based electrode for glass melting, palladium-based electrode for glass melting, rhodium-based electrode for glass melting, gold-based electrode for glass melting, silver-based electrode for glass melting, iridium-based melting crucible for industrial purposes, ruthenium-based melting crucible for industrial purposes, platinum-based melting crucible for industrial purposes, palladium-based melting crucible for industrial purposes, rhodium-based melting crucible for industrial purposes, gold-based melting crucible for industrial purposes, silver-based melting crucible for industrial purposes; shaped structural fittings for furnaces; shaped fittings specifically adapted for furnaces made of precious metals; shaped fittings specifically adapted for furnaces made of precious metal-containing materials; heating elements made of precious metal-containing materials