.1.High carbon 99%min 2.Low N &sulfur 3.High absorptivity in molten steel 4.Low N GPC known as Graphite Petroleum Coke Professional ManufacturerDuraTight annual output capacity of carbon additive has reached more than 60,000 tons. As an ideal carbon additive and intermediate reactor, it has been widely used in different industries like metallurgy, chemistry, machinery, electricity, etc. We can ...