| Manufacturer | CB Certificate No. | IECQ Certificate No. | | CB/NAI | Issue Date | Status | |
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| TA-I Technology Co Ltd [Taiwan] | |
| TA-I Technology Co, Ltd [Taiwan] | |
| Ta Hsing Electric Wire & Cable Co, Ltd [Taiwan] | |
| TA YIH INDUSTRIAL CO, LTD TA-YIH Lab [Taiwan] | |
| Tai Hong Circuit Industrial Co, Ltd [Taiwan] | |
| TAICANG NIENYI TECHNOLOGY ELECTRONICS CO... [China] | |
| TAISEI CO LTD [Japan] | |
| TAIWAN MEMORY QUALIFICATION CENTER [Taiwan] | |
| Taiwan Testing and Certification Center [Taiwan] | |
| | 20004032 ITL | IECQ-L ULTW 09.0012 | | ULTW (TAIWAN ) | 2023/05/24 | Current | |
| TAIYOSHA ELECTRIC CO LTD [Japan] | |
| TANSITOR ELECTRONICS Inc [United States of America] | |
| TATUNG CO (Taoyuan Wire and Cable Plant) [Taiwan] | |
| TEKFORCE CO, LTD [Taiwan] | |
| Teknoflex Limited [United Kingdom] | |
| Thermoway Industrial Co, Ltd [Taiwan] | |
| TOSHIBA CORPORATION [Japan] | |
| TOSHIBA HOKUTO ELECTRONICS CORPORATION [Japan] | |
| TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO... [Japan] | |
| TPC a Division of AVX Corporation (St Ap... [France] | |
| TPC Division AVX [France] | |
| TPC (Malaysia) Sdn Bhd Division of AVX C... [Malaysia] | |
| TPC (M) Sdn Bhd [Malaysia] | |
| TPC [France] | |
| TPO Displays Shanghai Ltd Optical and Re... [China] | |
| TYCO ELECTRONICS EM SHENZHEN CO, LTD [China] | |
| Tyco Electronics UK Ltd [United Kingdom] | |
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