... is one of the best filling materials for paint, printing ink, carbon, fiber, GRP, leatheroid, rubber, plastic, petroleum ... to less expensive fillers.Main Usage of cenosphere1. Paints and ink: ink, bond, vehicle putty, insulating, antiseptic, fireproof paints. ... : fire and water-proof materials, processed asphaltum, high-level road pavement, concrete repair materials.5. Encapsulation material: ...