China above-scale enterprises are more carbon and graphite products, low concentration. By the end of 2011, China more than the size of graphite and carbon products business amounted to 871 graphite prices, sales revenue of the top ten of the total sales revenue accounted for only 13.46% of the entire industry. Trends and competition from carbon and graphite products in the world market, the future of carbon and graphite products industry will gradually focus to large groups, the concentration of carbon and graphite products industry will be further enhanced. Crucible and related articles made of graphite forming and refractory crucible and its related products, such as crucibles, retorts, plugs and nozzles made of graphite, having a high fire resistance graphite, low thermal expansion, melting metal process, by metal infiltration and erosion are also stable at high temperatures good thermal shock resistance and excellent conductivity, so the graphite crucible and its related products are widely used in the process of direct molten metal. Traditional graphite clay crucible with flake graphite producing carbon content greater than normally graphite flake should be greater than mesh (- sieve), and the current key improvements abroad crucible production technology is the graphite type is used, with the flake size and quality greater flexibility followed by silicon carbide graphite crucible to replace the traditional clay graphite crucible, which is constant with the introduction of the steel industry in technology generated. Constant voltage technology can also be applied to make a small flake graphite, clay graphite crucible, graphite and silicon carbide crucible, large flake ingredients only content, carbon content is reduced to graphite. According to the ideal graphite sample Bernard provided, graphite structure is a plurality of parallel to the base surface level of oil continuous composite made. Within each layer, the carbon atoms are arranged in hexagonal, three adjacent carbon atoms covalently bonded to, a two dimensional infinitely extended into a mesh plane Qingdao graphite, referred to the base surface. Stacked sequentially phase shifted base surface, as shown in FIG. Unit cell a = 2.4612 ± 0.00001 ?, e = 6.7079 on 0.0007 ?. Interlayer distance: 3.3538 ?, capacity: 35.190 ?. Atoms, 4. Second Density: 2.266 g / cm, the same position every layer of carbon atoms, becomes AB, AB, AB. . . The three-dimensional ordered, was dense hexagonal stacking. Therefore, graphite on crystallography classification is hexagonal. Each layer is a metallic bond between the force against the activity level electron cloud between the link provided together, an interlayer distance of 3.35.8 angstroms, the binding energy of 4.36 kcal / g-atom, it is a very small change with temperature, by a 4 kcal of 196 degrees / gram atom to 3.6 kcal of 1118 degrees / gram atom, and the atom on the same plane spacing 1.415 ?, their binding ability to 170 kcal / gram atom. Each unit cell has four carbon atoms. Graphite Carbon price _ Sea Dragon (certified) _ graphite provided by Carbon Co., Ltd. Weifang Sea Dragon. Carbon Co., Ltd. Weifang Sea Dragon (www.longmentanye.com) Shandong Weifang, graphite and carbon products leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In the North Sea Dragon carbon industry leadership with the staff warmly welcome all inquiries negotiations to create the North Sea Dragon carbon industry a better future.