Threads and ring bands of precious metals; watch bands; ring bands plated with precious metal; jewelry findings; clockworks being clock parts; clock parts in the nature of parts for clockworks; watch springs; iridium and its alloys; platinum and its alloys; silver and its alloys; gold and its alloys

Treatment of materials in the nature of common metals and their alloys; treatments of metal alloys for additive manufacturing; polymer coating as a metal treatment; treatment and regrinding of metal surfaces, tools and machines; gold and silver plating; metal casting and tempering; assembly of products for others; fuel processing; treatment of materials in the nature of common metals and their alloys by mechanical or chemical processing; grinding; providing information relating to material tr...