Profile: National Power Engineers is a global supplier of Cenosphere. The cenospheres are hollow ceramic microspheres with special characteristics that enable them to be used in a wide number of applications. These are light weight, inert hollow sphere of silica alumina filled with gas which naturally occurs in the combustion of coal. The sphere is nature's most efficient shape with the lowest surface area compared to volume. The cenospheres have a unique combination of low specific gravity, controlled size, and high compression, good thermal & accountable insulating property. These are hard and rigid, light, waterproof, innoxious & insulative. This makes them highly useful in a variety of products, notably fillers. Cenospheres are used as fillers in cement to produce low density concrete. They have a high melting point of 1200-1800°C. These are used as light weight aggregate in oil well cements, sound proofing, thermal insulation, interior & exterior paints, injection molding of plastics, and in automotive brake linings.