have UL,CSA,CE,TUV,GS,BS,SAA,PSE,EK,FCC ,Brazil, EMC Leads-out EI ... workmanshipManufacture standards: GB/T15290-94, GB/19212-2006, GB2828-2829-87 and UL 5085Testing items:No-load test (no-load current ... customers' advicePacking:Carton EI transformer have UL,CSA,CE,TUV,GS,BS,SAA,PSE,EK,FCC ,Brazil, EMC