When mineral of the Mica circles is heated by high temperature of more than 1,000℃, the water between layers dehydrate from mineral, and then the mineral is excoriated & expanded towards bottom and lengthened like a leech. We call it "VERMICULITE" in Latin language due to such a expansion character. Expanded Vermiculite apply to not only construction & industry field very well because of excellent property as fire-proof, adiabatic, lightweight, noise-proof, dew-proof materials, but also many purposes as it shows a superior fuction as soil reform material for agriculture & horticulture fields due to excellent water supplement, fertilizer supplement, lightweight & drainage character.