| IATF 16949 | DONG-AH ELECTRIC COMPONENTS Gongju plant | Controllers | 2004.01.09 | DQS Korea |
| DONG-AH ELECTRIC EQUIPMENT Eumseong plant | Sensors, Cooling fan motor controller | 2010.12.30 | DQS Korea |
| DONG-AH ELECTRIC EQUIPMENT Gyeongju plant | Regulator assembly, Rectifier assembly, brush holder assembly | 2012.10.31 | DQS Korea |
| DONG-AH ELECTRIC EQUIPMENT Gamgok plant | PTC preheater assembly | 2013.05.29 | DQS Korea |
| DONG-AH HIGH TECH Gwangju plant | Resistor, FET assembly, Actuator motor assembly | 2012.04.18 | DQS Korea |
| DA AUTOMOTIVE MEXICO | Controllers | 2017.02.01 | DQS Korea |
| DONG-AH ELECTRIC INDIA | Controllers | 2012.09.13 | DQS Korea |
| RONGCHENG DONG-AH AUTOMOTIVE PARTS | Controllers, Resistor, Actuator, Speed Sensors, PCB assembly | 2007.08.24 | DQS India |
| DONG-AH ELECTRIC COMPONENTS VINA | Plastic parts for controllers | 2023.11.23 | SGS China |
