size: 1-2mm, 2-4mm, 1-4mm ,3-6mm Usage :Horticulture ,insulation,construction ,paint color:white delivery time :within7days 1.Perlite size :Unexpanded Perlite: 12-16mesh, 14-20mesh, 16-32mesh, 20-40mesh, 30mesh-50mesh, 50-150mesh, 200-325meshExpanded Perlite: 60mesh, 100mesh, 120mesh, 150mesh, 0.1-1mm, 1-2mm, 2-4mmHorticultural Perlite: 1-2mm, 2-4mm, 1-4mm ,3-5mm.2.Perlite ...