＊米国の産業機器の製品安全を試験する認定機関(NRTL)
以下の通りです。
1. Bay Area Compliance Laboratories
2. Bureau Veritas Consumer Products Services, Inc. (BVCPS)
3. CSA Group Testing and Certification Inc.
4. DEKRA Certification, Inc.
5. Element Materials Technology Portland ? Evergreen Inc.
6. Eurofins Electrical and Electronic Testing NA, Inc.
7. FM Approvals (FM)
8. International Association of Plumbing and Mechanical Officials EGS (IAPMO)
9. Intertek Testing Services NA, Inc. (ITSNA)
10. LabTest Certification Inc.
11. Nemko North America, Inc. (NNA)
12. NSF International (NSF)
13. QAI Laboratories, LTD (QAI)
14. QPS Evaluation Services Inc.
15. SGS North America, Inc.
16. SolarPTL, LLC
17. Southwest Research Institute
18. TUV Rheinland of North America, Inc.
19. TUV SUD America Inc.
20. TUV SUD Product Services GmbH
21. UL LLC