Specification of Expandable graphite: Carbon content: Min. 98% -99.5% Expansion rate: 350-700 cm3/ g Start temp.: 220-280 Grain size: 80% > 300¼ m Packaging: 1000kg/ bigbag; 1bigbags/ pallet; 10mt/ 20' FCL Qingdao Kropfmuehl Graphite Co., Ltd. provides a wide range of graphite grades. Among which, most grades are based on natural flake graphite. In addition, we also provide advanced grades based on synthetic graphite or " vein-type" graphite from Sri Lanka. In our sophisticated processing plant we can produce tailor-made grades according to our customers' demand. And we can find suitable solutions to all graphite applications.