1.the agent of the largest cenosphere manufacturer 2.export all over the world from 1988 3.use in oilfield, construction Itroduction1. application;fly ash cenospheres is used in the oil field cementing, to reduce cement costs and improve the life of wells fireproofing material, building material2. size: 10-550um3. color: light gray or white 4. advantages: light weight, nontoxic, tasteless, ...