carbon additive---cheap price and good quality

GPC can be used as carbon raiser to produce high quality steel,cast iron and alloy.
High-purity GPC is made from high quality petroleum coke under a temperature of 2,500-3,500°C. As a high-purity carbon material, it has characteristics of high fixed carbon content, low sulfur, low ash, low porosity etc.It can be used as carbon raiser (Recarburizer) to produce high quality steel,cast iron and alloy.It can also be used in plastic and rubber as an additive.
The size varies such as 0.5-5mm,0.3-5mm,0.5-8mm,0-10mm,1-4mm,5-10mm,0.4-4mm etc.