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| Country / location | IECQ Certificate Number | | Company | Issue date | Status | |
|---|
 Taiwan | IECQ-P NSAIUS 11.0003 | | Yealy Optic Electronic Co., Ltd. | 2013/01/19 | Cancelled | |
| Taiwan | IECQ-P NSAIUS 11.0001 | | Neo-Shiny Industrial Corporation | 2014/04/08 | Cancelled | |
| Taiwan | IECQ-P ULTW 14.0001 | | Hold Key Electric Wire and Cable Co., Ltd. | 2023/10/22 | Current | |
| Taiwan | IECQ-P ULTW 12.0017 | | I Sheng Electric Wire & Cable Co., Ltd. | 2013/02/22 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0016 | | True Test Technology Inc. | 2013/08/01 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0015 | | Siliconware Precision Industries Co., Ltd. Hsinchu... | 2012/07/06 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0014 | | Siliconware Precision Industries Co., Ltd. Hsinchu... | 2012/07/06 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0013 | | Siliconware Precision Industries Co., Ltd. | 2012/07/06 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0012 | | Siliconware Precision Industries Co., Ltd. Hsinch... | 2012/07/06 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0011 | | Siliconware Precision Industries Co., Ltd. | 2012/07/06 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0010 | | Siliconware Precision Industries Co., Ltd. | 2012/07/06 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0009 | | Shin Chin Industrial Co., Ltd. | 2021/03/31 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0008 | | YFC-BonEagle Electric Co., Ltd. | 2023/10/24 | Current | |
| Taiwan | IECQ-P ULTW 12.0007 | | Yeuen Young Electrical Co., Ltd. | 2024/03/05 | Current | |
| Taiwan | IECQ-P ULTW 12.0005 | | Conquer Electronics Co., Ltd. | 2023/10/22 | Current | |
| Taiwan | IECQ-P ULTW 12.0004 | | EVERTOP WIRE CABLE CORPORATION CHUNG LI PLANT | 2024/02/01 | Current | |
| Taiwan | IECQ-P ULTW 12.0003 | | Chung Kwang Electric Wire & Cable Co., Ltd. | 2016/01/26 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0002 | | Nice Fountain Industrial Co., Ltd. | 2015/12/10 | Cancelled | |
| Taiwan | IECQ-P ULTW 12.0001 | | Sin Yu Technology Inc. | 2020/11/02 | Cancelled | |
| Taiwan | IECQ-P ULTW 11.0006 | | Tai Hong Circuit Industrial Co., Ltd. | 2023/10/30 | Current | |
| Taiwan | IECQ-P ULTW 11.0005 | | Sunf Pu Technology Co., Ltd. | 2017/11/22 | Cancelled | |
| Taiwan | IECQ-P ULTW 11.0003 | | Walsin Lihwa Corp. | 2015/06/26 | Cancelled | |
| Taiwan | IECQ-P ULTW 11.0003-01 | | Walsin Lihwa Corp. | 2015/06/26 | Cancelled | |
| Taiwan | IECQ-P ULTW 11.0002 | | AID Electronics Corporation | 2014/10/28 | Cancelled | |
| Taiwan | IECQ-P ULTW 11.0001 | | Walsin Technology Corporation | 2019/12/02 | Cancelled | |
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