Chemical composition (% ) : SiO2 >55 Al2O3 >31 Fe2O3 <3 TiO2>1. 1 MgO >1 CaO >2 K2O >1 Loss <1 As an advanced multifunctional micromeritic material that appeared in the 1970s, Cenosphere is a kind of spherical hollow ultrafine ceramic vitreous body containing nitrogen and carbon dioxide negative pressurized gas (main constituent: SiO2 and Al2O3) . It has distinct external characteristics and standard spherical shape. Of all the shapes in nature with the same volume, sphere has the smallest surface area, which offers Cenosphere multiple peerless physical and chemical properties. For such features as high compression strength, high melting point, high electrical resistance, low coefficient of heat conduction and coefficient of thermal contraction, Cenosphere is known as "Material of the Space Epoch? Such physical and chemical properties and low price make Cenosphere an excellent filler for polymer, which greatly reduces the cost of filled products and improves multiple performances of the filled products. As a result, Cenosphere plays an important role in multiple applications and creates considerable economic benefit for enterprises