| |
|
|
| 1972. 10. 13 | Establishment | |
| 1982. 07. 12 | Completion of Dongdoocheon factory | |
| 1984. 04. 30 | Selected as a Prospective Small and Medium Enterprise | |
| 1985. 01. 14 | Korea Bookdu Audio changes its name to Bookdu Inc. | |
| 1986. 07. 21 | Establish in-house research center | |
| 1986. 10. 11 | Awarded as the first class quality management factory | |
| 1987. 05. 24 | Completion of the new DongdooCheon factory | |
| 1987. 05. 25 | Automation of speaker production line in operation | |
| 1987. 05. 25 | Awarded Q.Mark |