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.(including previously Ex-Agencija) |
| Finland | Eurofins Electric & Electronics Finland Oy (EESF，previously VTT) |
| France | Institut National de l'Environnement Industriel et des Risques (INERIS) |
| Germany | Bureau Veritas Consumer Products Services Germany GmbH (EPS, BV) |
| 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 | ICR Co., Ltd. (ICRK) |
| Republic of Korea | Korea Gas Safety Corporation (KGS) |
| Republic of Korea | KSC Co. Ltd. (KSC) |
| Republic of Korea | Korea Testing Laboratory (KTL) |
| Netherlands | DEKRA Certification B.V. (DEKRA KEMA) |
| Norway | Nemko Group AS (including Nemko USA, Inc., previously Nemko PTI) |
| United Kingdom | Eurofins E&E CML Limited (CML) |
| United Kingdom | Intertek Testing & Certification Limited UK (ITS) |
| United Kingdom | SGS United Kingdom Limited (previously SGS Baseefa Limited) |
| United States of America | Intertek Testing Services NA, Inc. (ITS US / ETL) |
| United States of America | UL Solutions (UL) |