Calcium Carbonate nano-fillers We at DSI can tailor PCC to optimize its performance for specific applications. Plastics fillers DSI introduces innovative silica products: DCC PVC, DCC PA, DCC PP, DCC PET. Paper fillers DSI plans producing precipitated calcium carbonate for paper fillers under the DCC PF trade name. Paint & lacquer fillers DSI plans producing precipitated calcium carbonate for paint and lacquer materials under the DCC PLM trade name.