... 1)wideli use in paint rubber feed reagent industry ... 2)high purity.99.9,99.7,99.5% ... 3)ISO & ... ASTM standard requirements.Characteristic and function1.High activity, even granularity, it’s possessed of high dispersing ability, has the good promotion curing ... It can make good dynamic performance, make the rubber products with little deformation, low heat generation, high anti-abrasion. Enable to ...