... -16mesh,14-20mesh,16-32mesh,20-40mesh30-50mesh,50-70mesh ,70-90mesh ,90-120mesh 150mesh,200-325mesh 1-3mm 2-4mm ... ,food and dirty waterused as filling and dilating agent in rubber,painter and plastic,etc.used as catalyst in explosivesused to ... Tel:8613582186358 Perlite(raw/unexpanded)18-20mesh 30-50mesh50-70mesh ,70-90mesh ,90-120mesh