Sales of various chemical additives to the company, Carbon Black, Rosin Ester, OH POLYMER, DIMETHYL SILICONE FLUID, FUMED SILICA AppearanceWhite powderSpecific surface area (m2/g)100±20150±20180±20200±20300±30400±30Bulk density (g/L)505050505050Dry reduction (%)<1.5<1.5<1.5<1.5<2.0<2.0PH value3.8~453.8~453.8~4.53.8~4.53.8~4.53.8~4.5SiO2 (%)>99.8>99.8>99.8>99.8>99.8>99.8Chloride content (%)<0.025< ...