The core activity of D-CoJoux SA is the manufacture and refinement of high-precision components for the watch industry, including: turning (production of components such as pinions, axles, barrel drums, wheel arms, balances, etc.), heat treatment (heat treatment of steel, stainless steel, revenu, revenu entre-plaque, structural hardening, etc.), polishing (polishing of components, including high-end polishing such as DC), angling (manufacture of components such as plates, bridges, piton holders, etc.) and decoration (refining of components through circling, pearling, Geneva stripes, colimaçonnage, sunburst, stretching, molding polishing, etc.). The company thus offers a wide range of services for the watch industry, from component manufacturing to refinement and polishing.