Shanghai Ostar International Trading CO.Ltd

we have the Cenosphere if you're interesting , pls contact us ,  A cenospheres is a light weight, inert, hollow sphere made largely of silica and alumina and filled with air or inert gas., typically produced as a byproduct of coal combustion at thermal power plants. The color of cenospheres varies from gray to almost white and their density is about 0.4?0.8 g/cm� which gives them a great buoyancy. Cf. glass microspheres.
Cenospheres are hard and rigid, light, waterproof, innoxious[citation needed], and insulative. This makes them highly useful in a variety of products, notably fillers. Cenospheres are now used as fillers in cement to produce low density concrete[citation needed]. Recently, some manufacturers have begun filling metals and polymers with cenospheres to make lightweight composite materials with higher strength than other types of foam materials[citation needed]. Such composite materials are called syntactic foam. Aluminum-based syntactic foams are finding applications in the automotive sector[citation needed].
Silver-coated cenospheres are used in conductive coatings, tiles and fabrics. Another use is in conductive paints for antistatic coatings and electromagnetic