... ink, carbon, fiber, GRP, leatheroid, rubber, plastic, petroleum field(anchoring, pipeline, anticorrosion and warm keeping),and so on. Cenospheres ... g/cm3)0.3-0.5ColorWHITE OFFMoisture 0.5%Compressive Strength(Mpa) 350Hardness(Mohs Scale)6-7Melting Point( C) ... shape, cenospheres produce far less viscosity.4. HIGH COMPRESSIVE STRENGTH: cenospheres can greatly improve the weariness properties of the ...