| Manufacturer | CB Certificate No. | IECQ Certificate No. | | CB/NAI | Issue Date | Status | |
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| IMS Chips - Institut für Mikroelektronik... [Germany] | |
| IMV CORPORATION Test Laboratory Division... [Japan] | |
| Infineon Technologies AG [Germany] | |
| INNOLUX CORPORATION Testing Center Mater... [Taiwan] | |
| Innolux Corporation (Jhunan) Testing cen... [Taiwan] | |
| Innolux Corporation (Tainan) Testing cen... [Taiwan] | |
| Innolux Optoelectronics Ltd (Shanghai) A... [China] | |
| INPAQ Technology Co, Ltd [Taiwan] | |
| INPAQ Technology (Taichung) Co, Ltd [Taiwan] | |
| integrated Service Technology Inc [Taiwan] | |
| Integrated Service Technology (Kunshan) ... [China] | |
| Integrated Service Technology (Shanghai)... [China] | |
| Integrated Service Technology (Shenzhen)... [China] | |
| Integrated Service Technology, Inc [Taiwan] | |
| Integrated Services of Quality Assessmen... [Taiwan] | |
| Intel Mobile Communications GmbH [Germany] | |
| Inventec AE PA Testing Laboratory [Taiwan] | |
| Inventec Corporation (Taoyuan), Chemical... [Taiwan] | |
| Invotec Circuits Blackburn Limited [United Kingdom] | |
| Irlandus Circuits Ltd [United Kingdom] | |
| ITT Industries Limited [United Kingdom] | |
| ITW doo [Slovenia] | |
| ITW Switches, A Division of ITW Limited [United Kingdom] | |
| IWATE ELECTROLYTIC INDUSTRY CORPORATION [Japan] | |
| | RCJ-00C-03 | S-IECQ RCJ 04.0001 | | RCJ (JAPAN) | 2010/11/08 | Cancelled | |
| | RCJ-00C-03 | S-IECQ RCJ 04.0001 | | RCJ (JAPAN) | 2009/11/16 | Cancelled | |
| IWATE NIKKAN CO LTD [Japan] | |
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