The production of stem graphite packing of expanded mineral graphite Valvograph for industrial valves arises from the interaction with the technical department of the valve manufacturers. The technical staff Carrara S.p.a. regularly participates in international symposia Valve World to learn about the evolution of the world of the valves, the regulations that affect them, the new targets required by End Users. Carrara is member of ESA and partecipates regularly to the technical meetings organized by the producers of raw materials in order to offer always the best.