| Jan. 1980 |
Construction of phenolic resin plant was completed in Ulsan. |
| Nov. 1982 |
Construction of coumarone indene resin plant was completed in Ulsan. |
| May. 1983 |
Construction of FURAN resin plant was completed in Ulsan. |
| Apr. 1987 |
Construction of hydrogenated C9 resin plant was completed in Ulsan. |
| Nov. 1987 |
Construction of R&D Center was completed in Incheon. |
| Mar. 1988 |
Construction of polyurethane resin plant was completed in Incheon. |
| Jun. 1988 |
Kolon Chemical went public (with the paid-in capital of KRW2.7 billion) |
| May. 1989 |
Construction of thermoplastic polyurethane resin plant was completed in Incheon. |
| Oct. 1989 |
Construction of phenolic resin plant was completed in Gimcheon. |