Shijuishan city, the place where our factory located, is famous as home to ?Taxi coal?. Taxi coal?, which is known as the king of coal, enjoying the properties of low Sulfur, low phosphorus, low ash, high chemical activity, high mechanical strength, high calorific value, high conductivity, high fixed carbon content, high recovery rate of clean coal. The processed ?Taxi coal? after watering, monitoring become the top grade raw material for producing carbon additive. So our carbon additive are with the characteristics of high carbon, low sulfur, with stable effect for improving the carbon content, high absorptive of carbon.