... -8mmRaw vermiculite:Golden:0.3-1mm,1-2mm,1.5-2.5mm,1-3mm,2-4mm,3-8mm,4-8mmSilver:0.3-1mm,1-2mm,2-4mm,4-8mm ... production &conduct rigorous quality control to ensure top quality products.With the ultimate tenet of “based on customers, cooperation for mutual ... Mutual Benefit", and we sincerely hope to establish business relationships with you based upon the mutual-benefit and friendly cooperation We ...