| 사업 | 설립 | 연락처 |
|---|---|---|
| Telematics Co. Ltd. | 1997 | 1 |
| Mewtel Technology Inc. | 2001 | 1 |
| Mewtel Corp | - | 1 |
| Sangam Communications | - | 2 |
| Supernet Co., LTD | - | - |
| Do Hoon Kim | - | 1 |
| Midas Information Technology Co.. Ltd. | - | - |
| Shin, Dongyeup | - | 1 |
| Core River Semiconductor Co., Ltd. | - | 1 |
| Electronic Technology in Systems Co., Ltd. | - | 1 |
| Green Engineering & Construction Company Ltd. | - | 1 |
| Intelligent Wave Korea Inc. | - | 1 |
| Joohong Information & Communication Ltd. | - | 1 |
| KO Sung Moon Wha Paper Co. Ltd. | - | - |
| SLD Co., Ltd. | - | 1 |
| Sanghwa Micro Technology Inc. | - | 1 |
| Seoul Air Conditioning Co., Ltd. | - | 1 |
| Solid Technologies, Inc. | - | 1 |
| Good Morning Forte Co. Ltd. | - | - |
| Han Chang Hp Eng. Co. | - | - |
| J Cable Co., Ltd. | - | - |
| Kisa | - | - |
| Namyang Pharm Co., Ltd. | - | 1 |
| Sam Laser Display Co.Ltd. | - | 1 |
| 하나정밀조각 | - | - |
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