Yingkou Sanzheng Jiarou Carbon Industry Co., Ltd. is a subsidiary of Sanzheng Company with a total investment of 15 million yuan. It has a calcining furnace with a production capacity of 2200T/month for 24 tanks. It can produce calcined petroleum coke of various qualities at the same time. Nine-layer fire channel reverse combustion method. This process is characterized by stable product quality, effectively reducing the volatile content of the product, and increasing the true density of the product. It is currently a more advanced furnace type at home and abroad. The calcined petroleum coke is used to make graphite electrodes. , Pre-baked anode, high-purity carbon block, electrode paste, anode paste, steelmaking recarburizer and other necessary raw materials.