Sitech has agreed to exclusively distribute 4PICO Litho's hologram, OVD and Fresnel lens mastering systems worldwide. 4PICO Litho of the Netherlands has developed the world's first range of dedicated direct write lithography (DWL) systems for the origination all kinds of holograms, OVD's, diffraction patterns, Fresnel lenses, Fresnel 'bas relief' images and zero-colour 'platinum' images and patterns.