This product is a carbon-neutral series of high-dispersion silica prepared by a special carbon dioxide precipitation process using straw, rice husk ash or sour alkali as raw materials. It is a white, non-toxic, amorphous fine powder or Microbeads, this product has an important inorganic silicon compound with excellent properties such as porosity, high dispersibility, light weight, good chemical stability, high temperature resistance, non-combustion, and good electrical insulation.