Services of a dental technician; processing of dental prosthesis, namely, manufacturing of dental prosthesis to the order and specification of others; laminating of artificial tooth; treatment of materials for the manufacture of ceramic goods; precious metal smithing; polishing of jewelry; plating, namely, electro-plating; chromium plating; dental scrap refining; custom manufacture of dental prosthetics; processing of dental bridges, namely, manufacturing of dental bridges to the order and sp...