Development and application of flexible graphite and flexible graphite and expandable graphite expanded graphite material is important graphite deep processing products. From the point of view of materials science, expanded graphite and flexible graphite graphite both very different, are two materials. Loose expanded graphite is a porous graphite structure material Lacey, with excellent hermetic seal performance. With the development of technology and the application of new materials, these two types of new materials due to their different characteristics, their applications are also significantly different. This article will discuss two different but closely related material properties, in the chemical industry and other fields of application status and development trend. Industrial operations, concentrated sulfuric acid used as an interlayer graphite insert Lacey sell, so it is also called acidification graphite (expandable graphite). However, after acidification graphite is graphite with an acid, washed with water and dried, inter-layer insert has been most escape, so it is actually the residual inter-graphite intercalation compounds. In the vast majority of inter-graphite intercalation compound by rapid heating between carbon graphite manufacturers, the insert will be vaporized layer, thereby forming a high pressure, so that the graphite particles expand in the C-axis direction. After acidification thin flake graphite worms swell like a strip lengths up to 1 ~ 2cm so called worm worm graphite or graphite, graphite expansion that is commonly referred to. Lacey graphite, graphite, carbon industry Weifang Sea Dragon Sea Dragon by Carbon Co., Ltd. Weifang. Carbon Co., Ltd. Weifang Sea Dragon (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 the industry in the North Sea Dragon carbon into the brilliant and you work for a better future!