It is extensively used in electric power, petroleum, Chemical industry, metallurgy, textile, agriculture and foodstuffs. Also used for heat insulation,sound insulation,animal's fodder,deodorant. Insecticide,disinfectant,bactericide,etc. The following items are available 1.silver vermiculite 1-2cm;2-4cm;3-5cm;4-6cm;5-7cm expand coefficient:8.5times min 2.golden vermiculite 1-2cm;2-4cm;3-5cm;4-6cm;5-7cm 3.expanded vermiculite