automatic and semi-automatic machines for the production of diamond tools; namely, sintering machines, grinders, welders, presses, tensioning machines, automatic mixers for powders and brazing machines; power operated tools; namely, gang saw and saw blades as machines parts; diamond tools; namely, tools made with diamond powders and diamond segments as part of grinders for use in milling machines, cutting machines, drilling machines and lathes; and diamond powders and diamond segments; namely...