Columnar activity using high-quality coal as raw material, after carbonization→cooling→activation→washing and a series of processes developed from. Its appearance is generally black cylindrical activated carbon, amorphous coal particles activated carbon, also known as broken carbon. Cylindrical activated carbon, also known as eylindrical carbon, is generally by powdery raw materials and binder by kneading, extrusion and then by carbonization, activation and other processes made, It can also be extruded with powdered activated carbon and binder. With the developed pore structure, good adsorption performance, high mechanical strength, easy-to-repeat regeneration, and low-cost characteristics.