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■N650（GPFHS）High structure general purpose furnace black is a recent development and wet soft product of ROUND STAR company. N650 is a middle-reinforced high-performance general-purpose furnace black, it can give a better process performance to rubber, and has higher rubber tear strength and modulus. ■N650 is used widely and applicable to tire cord layer, sidewall, inner tubes, cable coating, hose, shoes and other ro...