... 3.Whiteness:96 4.Activation Grade:98 Activated Nano Precipitated Calcium CarbonateAfter a series of processing done by ... our company, the nano calcium carbonate can be applied for PVC (PVC), ... polypropylene (PP), polystyrene (PS) and other plastics industries.Activated Nano Precipitated Calcium Carbonate ItemSpecificationCaCo3 content (%)98BET surface area (m²/ ...