The brilliant expansion perlite is a new type material of thermal insulating and heat-resistantor.Using liquefied pertrolum gas as fuel and selectivly particle size of high quality graded perlite as raw material, the product shall be formed at a sudden and controlled high temperature. Compared to ordinary expansion perlite, the outstanding characteristics are is its low bulk density, low heat exchange coefficient as well as exhibiting symmetrical size. The product is mainly used for the storage of liqufid industrial gasses in double wall cold or storage sphere as a good low temperature insulation material。