Riley Supplies (RileySupplies) Supplier of transparent conductive substrates including ITO (Indium Tin Oxide) coated glass slides and ITO Coated PET plastic films, polymer microspheres and nanospheres, and lab supplies including tweezers and sample vials. We also provide custom services for photolithography patterning, vacuum coating - physical vapor deposition (PVD), screen printing, and synthesis of specialty monodisperse polymer and silica spheres.