This standard specifies the classification and nomenclature, requirements and test methods for electrical thin cardboard. It is applicable to electrical thin cardboard made of 100% sulfate wood pulp or 100% cotton pulp and a mixture of sulfate wood pulp and cotton pulp. Criteria including definitions, general requirements and test methods for electrical pressed Cardboard and thin cardboard are cited. According to relevant regulations, the classification and nomenclature of electrical thin cardboard are shown in Table 1.