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1990.11 | Cheongsong JungAng Aluminum. Co., Ltd. established |
| 1991.05 | Electro deposition facility installed and in operation |
| 1996.06 | Cheongsong JungAng Aluminum factory no.2 established (in Namdong industrial complex) |
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1997.01 | ISO 9002 certified |
| 1997.02 | Membership in extruded aluminum manufacturers association |
| 1997.02 | orean Industrial Standards certified |
| 1997.03 | Membership in K.S certified extruded aluminum manufacturers association |
| 2000.11 | Awarded Commendation for excellent business administration by Incheon City Authority |
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2001.06 | Extruding capacity at factory no. 3 in Sihwa industrial complex expanded by 1,800 tons |
| 2002.03 | Extruding capacity at factory no. 3 in Sihwa industrial complex expanded by 1,350 tons |
| 2003.12 | Headquarter and branch office relocated (Headquartered at Sihwa factory in Ansan City with branch office at Incheon factory) |
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2005.11 | Designated a Hopeful Enterprise in the small and medium-sized category by Korea Development Bank |
| 2007.04 | Installed sandblast |
| 2007.07 | The capacity of extruder(1,350 tons) expanded to 1,800 tons |
| 2007.10 | J.E.SIM inaugurated as Cheongsong CEO |
| 2008.10 | Installed 3th aging Oven |
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2010.05 | Built a manufacturing process factory at the city of Yesan to make aluminium windows, doors ant others |
| 2011. | Eatablished the R&D Center |
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