Profile: Mario Di Maio S.p.A provides tools to goldsmiths, jewelers and silversmiths. We are an ISO 9001: 2000 certified company. Our mechanical work includes rolling-mills, hydraulic presses, spinning lathes, cutting, polishing, beading machines and riveting machine. We provide rolling mills for plate, bar and wire rough-rolling. We also offer motorized circular shearing machines for discs and rings. Our circular shearing machines can cut metal sheets with thickness up to 2 mm with the utmost accuracy and parallelism of the cutting. Our spinning is particularly convenient for small series production, where axial symmetrical items with Ra 0.3 surface finishing have to be obtained from different materials in different thicknesses.