IEC 60335-2-111:2015-Household and similar electrical appliances-Safety-Part 2-111: Particular requirements for electric ondol mattress with a non-flexible heated part, IEC 61676:2002-Medical electrical equipment-Dosimetric instruments used for non-invasive measurement of X-ray tube voltage in diagnostic radiology, IEC 60464-2:2001/AMD1:2006-Amendm… Read More