Gold vermiculite 1.Expanded vermiculite Features:Non-asbests Heat-resistant, corrosion- ... , water preservation, poisonless, odorless, low hardness, burning-avoidness, lighter. 2.Gold vermiculite size: Raw golden vermiculite 0-30um,0.3-0 ... -6mm,4-8mm Or depend on client's demands 3.Gold vermiculite chemicals Composition SiO2 MgO Al2O3 Fe2O3 CaO K2O ph ...