This standard specifies the classification, codes and markings of flexible graphite sheets and strips. This standard applies to flexible graphite plates and strips, as well as flexible graphite composite plates and strips.
JB/T 6613-2008 history
2008JB/T 6613-2008 The classification,code and sign of flexible graphite sheets/strip
1993JB/T 6613-1993 Flexible graphite sheet, with classification, code and marking