Carbon raiser used real Anthracite Coal as material. different material with different price in the market. In fact, the unit cost of carburizer in bituminous(soft) coal production is much higher than that in anthracite production. For example, for steel plants, 300 tons of anthracite carburizer is needed for 200000 tons of steel, but 500 tons of bituminous coal carburizer is needed. Any interesting,please contact us freely. wechat/WhatsAPP numbervis 008613739698406 E-mail ID is sophiawang110609@163.com