Our Product Our nano copper particles are a revolutionary product that offers a solution for efficient and versatile for various applications. Main features of the CuPROtech copper nanoparticles OXIDE-FREE nanocopper Valencia Zero The particle is metallic and preserves the chemical, physical, electric and electronic figures of solid copper (*)Stabilized The particles are preserved free of oxidation and environmental reaction (*)Purity 4N (99.99+%)Average Size of poly-aggregates 30 nm, individual particle average 10 nm.