Nuclear and chemical requirements for low-sulfur and high-purity flexible graphite, general nuclear grade flexible graphite 500PPM less sulfur content; the nuclear island part of its requirements are higher. Petrochemical especially Pingdu graphite fine chemical manufacturers, in order to prevent corrosion of metal surfaces graphite seal, requiring corrosion-type flexible graphite, generally adding molybdate and other corrosion inhibitors in the flexible graphite. Also in the pipeline leak in order not to stop production, there are strip temperature, Pressure Seal flexible graphite with injectable fillers. Flexible graphite as a sealing material, sealing - leak rate on the sale of carbon graphite quantitative tests, from the user to the manufacturer in the technical aspects of innovation and test equipment are not well resolved. Foreign attaches great importance to technology research in this area, Germany was in 1995 the development of standards, provides testing technology and equipment, requires nitrogen leakage rate is flexible graphite sheet and strip and composite panel is less than 0.1mg / m * s (DIN28091). China also We should conduct more work in this area, to improve product quality and level of use efficiency of the State in flexible graphite sealing material. Lacey Graphite _ _ North Sea Dragon carbon graphite industry by Carbon Co., Ltd. Weifang Sea Dragon. Weifang Sea Dragon Carbon Co., Ltd. (www.longmentanye.com) strong, credible, Shandong Weifang graphite and carbon products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead North Sea Dragon carbon industry into the brilliant and you work for a better future!