ITRI has mutual recognition agreements (MRA) regarding acceptance of test reports in explosion protection field for certification purposes with the certification bodies as the listed below. Ex equipment tested and certified in compliance with IEC standards by those listed cooperative certification bodies will be able to access Taiwan market with full validity via ITRI approval services.
| Canada | CSA Group (including CSA Group Testing UK Ltd. (previously SIRA Certification Service)、CSA Group Netherlands B.V.) |
| Canada | QPS Evaluation Services Inc (QPS) |
| Croatia | Fiditas d.o.o. |
| Finland | Eurofins Electric & Electronics Finland Oy (EESF，previously VTT) |
| France | Institut National de l'Environnement Industriel et des Risques (INERIS) |
| Germany | Physikalisch-Technische Bundesanstalt (PTB) |
| Germany | DEKRA Testing and Certification GmbH (previously DEKRA EXAM, BVS) |
| Germany | TÜV Rheinland Industrie Service GmbH (TUV Rheinland) |
| Germany | TÜV SÜD Product Service GmbH (TPS) |
| Hungary | ExVÁ Ltd (previously BKI) |
| Italy | Centro Elettrotecnico Sperimentale Italiano S.p.A. (CESI) |
| Japan | Technology Institute of Industrial Safety (TIIS) |
| Republic of Korea | Korea Gas Safety Corporation (KGS) |
| Republic of Korea | Korea Testing Laboratory (KTL) |
| Norway | Nemko Group AS (including Nemko USA, Inc., previously Nemko PTI) |
| Netherlands | DEKRA Certification B.V. (DEKRA KEMA) |
| United Kingdom | United Kingdom Limited (SGS, previously SGS Baseefa Limited) |
| United Kingdom | Eurofins E&E CML Limited (CML) |
| United Kingdom | Intertek Testing & Certification Limited UK (ITS) |
| United States of America | UL LLC (UL) |
| United States of America | Intertek Testing Services NA, Inc. (ITS US / ETL) |