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High Carbon Low Sulfur Low Nitrogen Graphitized Petroleum Coke / GPC / 0-5mm, 0-1mm, 0.5-5mm, 1-5mm / Use for Metallgurgy & Foundry, Find Details and Price about Calcined Petroleum Coke Graphitized Petroleum Coke from High Carbon Low Sulfur Low Nitrogen Graphitized Petroleum Coke / GPC / 0-5mm, 0-1mm, 0.5-5mm, 1-5mm / Use for Metallgurgy & Foundry - SID (Shanghai) Industries Co.,LTD.