... Product Description The detailed information for thermal insulation bricks is: 1. diatomaceous brick density ... 0.6g/cm3 to .8g/cm32. clay insulation brick density from 0.6g/cm3 to 1 ... JM 26, JM 28 & JM305. Other thermal insulation bricks made of silica, mullite and alumina powder.Common ... also be offered according to clients requirement.Our thermal insulation bricks are well exported to Korea, Japan, ...