| # | Name | Location | Applications |
|---|---|---|---|
| 1. | NKG Co., Ltd. | 🇯🇵 Hiroshima, Japan | 1 |
| 2. | NKG Insulators, Ltd. | 🇯🇵 Nagoya, Japan | 2 |
| 3. | NKG Insulators, Ltd. | 🇯🇵 Nagoya-City, Japan | 2 |
| 4. | NKG INSULATORS, LTD. | 🇯🇵 Aichi-prefecture, Japan | 1 |
| 5. | NKG Spark Plug Co., Ltd. | 🇯🇵 Nagoya, Japan | 1 |