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Patent certification 1.2/50 S combined wave 1.2/50 S combined wave 8/20 S single wave 10/700 S combined wave ESD static electricity Insulation withstand voltage tester Digital bridge Transistor Tracer Discharge tube tester Varistor tester Serial number Product category Report number Reporting time Remarks 1 Lightning arrester appearance patent 2016300346936 2016-01-30 Appearance patent certificate