the first includes RP, HP, SHP and UHP graphite electrodes and anti-oxidation impregnated graphite electrodes in all specifications; the second series is comprised of isotropic high-density, high-strength and high-purity graphite in all specifications; the third series inclundes nonstandard graphite products used in graphite chemical equipments and machining as well as all kinds of irregular-shape carbon products and graphite processes products etc.