... Horticulture,construction ISO9001-2000 company. Type,Raw(unexpanded) perlite,expanded(poped) perlite.Size:1,Raw perlite,18-20mesh,20-30mesh,35-50mesh,50-70mesh ... pp bags or in 1mt big bags for shipment.2,Expanded perlite,In 100liters pp bags for shipment. or as you request ... for beer,fruit juice,plant oil,chemical etc field,the expanded perlite can get a ideal and good effect.Hope to serve ...