Alpha Technical Sound
| Business category 1 | Amplifier |
| City ( of main office ) | Inch’ŏn, KR, South Korea |
| Address | Dongchun-dong, Yeonsu-ku |
| Phones | 82-32-8310896 |
| Fax | 82-32-8210334 |
| Date | 2011 Oct 28, 23:10 |
| Business category 1 | Amplifier |
| City ( of main office ) | Inch’ŏn, KR, South Korea |
| Address | Dongchun-dong, Yeonsu-ku |
| Phones | 82-32-8310896 |
| Fax | 82-32-8210334 |
| Date | 2011 Oct 28, 23:10 |