| Country |
Agency |
Symbol |
| Argentina |
IRAM |
 |
| Austria |
OVE |
 |
| Canada |
CSA |
 |
| Denmark |
DEMKO |
 |
| France |
UTE |
 |
| Israel |
SII |
 |
| Japan |
Dentori |
 |
| Norway |
NEMKO |
 |
| Switzerland |
SEV |
 |
| U.K. |
BSI |
 |
|
| Country |
Agency |
Symbol |
| Australia |
SAA |
 |
| Belgium |
CEBEC |
 |
| China |
CCEE |
 |
| Finland |
SETI |
 |
| Germany |
VDE |
 |
| Italy |
IMQ |
 |
| Netherlands |
KEMA |
 |
| Sweden |
SEMKO |
 |
| U.K. |
ASTA |
 |
| United States |
UL |
 |
|
