| Underwriters Laboratories Inc. (UL) |
| Verband Deutscher Elektrotechniker (VDE) |
Canadian Standards Association (CSA)
Intertek Group plc. (ITS) |
| TÜV Rheinland Group (TUV) |
| CHINA QUAUTY CERTIFICATION CENTRE (CQC) |
| Standards Australia International (SAI) |
| Japen Electrical Safety & Enviroment Technology Laboratories (JET) |
