High concentration CaCo3 powder or black carbon for Two stage plastic polymer extruder

High concentration CaCo3 powder or black carbon for Two stage plastic polymer extruder HS CODE: 8477.2010 This machine extrusion group is used for: heat sensitive material and high percentage added filler, CaCo3 (Calcium Carbonate) powder, BaSo4(Barium Sulfate) powder, Talcum powder, black carbon and Etc.