CPC,GPC,CAC Carbon Raiser Description Carbon raiser is a big category that includes calcined petroleum coke(CPC), graphite petroleum coke(GPC), calcined anthracite coal(CAC), and natural graphite. calcined petroleum coke, graphite petroleum coke, and calcined coal are more suitable for the current steelmaking and casting process. Our Product Advantages Our carbon raiser has a fixed carbon content of 95%-99.5% and has excellent properties such as high carbon, low sulfur, low ash, low resistivity, and high density. It is the best material for producing high-quality carbon products and is often used as a recarburizer in the steel industry.