text: from .abstract import AbstractNetwork
  
  
  class ChinaUnionPay(AbstractNetwork):
      @property
      def verbose_name(self):
          return "China UnionPay"
  
      @property
      def active(self):
          return True
  
      @property
      def iin_ranges(self):
          return ["31", ]
  
      @property
      def length(self):
          return [19, ]
  
      @property
      def validation(self):
          return True
  