it is a surface treated, super ultrafine and very narrow particle size distribution precipitated calcium carbonate specially formulated as functional filler in rubber products. APPLICATIONS 1) In the sidewall and cord ply compounds of bias tire (+5-8 phr NPCC); 2) In the tread compound and inner liner of radial tire (+4 phr NPCC); 3) In the butyl inner tube, Meanwhile (+15-20 phr NPCC); 4) Cycle Tire. With adjusting the quantity of carbon blank and softener properly. 4) PVC cables and wires.