... SmectiteNanometer montmorillonite belongs to smectite(including calcium,sodium,sodium-calcium,magnesium smectite),made from shelling,dispersing,purifying,grading and special ... Organic Bentonite Rheological AdditiveMade from the composites of saponite and calcium bentonite by special process, ... and the trading of titanium dioxide,Calcium hydroxide,Calcium carbonate,Silicon dioxide,Pulvistalci.etc.We ...