1.Packing:50kg/1ton bags 2.Colour:Black 3.Size:15-20cm 4.USD140-180/MT 5.Natrual mine Size:1-3mm,3-5mm,5-7mm,7-10mm,5-10mm;1-2cm,2-4cm,3-5cm,4-8cm,5-10cm,etc 1.Chemical Composition: SiO2CaOMgOFe2O3FeOAl2O3TiO2K2ONa2O53.82%8.36%2.46%9.08%1.12%16.89%0.06%2.30%2.55% 2.Properties:1.It has lots of holes.2.Weight is very light.3.Perfect intensity4.Heat preservation and thermal insulation, noice ...
