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	¡á 1961.10 Established the corporation as Ulsan hydrogen at Haksan-Dong, Ulsan-si ¡á 1967.04 Agent of Korea fertilizing industry corp. for products oxygen, nitrogen, carbon dioxide, and ammonia

	¡á 1974.07 Acetylene Plant completed and started to produce ¡á 1976.04 Carbonic dioxide filling plant completed and started to produce ¡á 1977.07 Established Ulsan general gas industry corp. ¡á 1978.10 Agent for Korea gas corp for liquid oxygen and nitrogen ¡á 1979.05 Oxygen providing plant completed and started to produce

	¡á 1982.07 Established Ulsan Gas Company. ¡á 1983.05 M&A with Ulsan Jonghap Gas Co., Ltd. ¡á 1984.12 Hydrogen plant completed and started to produce. ¡á 1986.01 Laboratory completed, produced high purity gas(General/Mixture) ¡á 1987.11~12 Ammonia, Nitrogen, and Argon plant completed and started to produce

	¡á 1991.12 Equipped the pipeline 40Km in the petrochemical industry complex ¡á 1992.12 Increased capital of 240 million Korean won (Total 960 million Korean won) ¡á 1993.07 Registered for trading agent and started as agent of international trading ¡á 1994.10 Awarded by Ministry of Korean industry and resources at 1st korean gas safety competition ¡á 1994.11 2nd plant established (Seosan-si, ChungNam-Do) ¡á 1996.01 Renamed company from Ulsan Jonghap Gas Co., Ltd. to Deokyang Gas Corp. ¡á 1997.07 Increased capital for 800million Won (Total capital two billion Won) ¡á 1997.08 Liquid Carbon Dioxide plant completed and started to produce ¡á 1997.10 Acquired patent for MnNi5 hydrogen storage material (Patent no.126609) ¡á 1998.10 Certificated for ISO 9002 of Deokyang Gas Corp.'s at Seosan Plant ¡á 1999.05 3rd plant completed at Hwasung, Kyeongki-Do ¡á 1999.05 Capital investment to SukYeong Commercial Co.,Ltd. [Semiconductor gases & production tools import company] ¡á 1999.11 Awarded by Prime Minister of Korea for 6th korean gas safety competition ¡á 1999.12 Capital investment to NeoTec Co., Ltd.[Internet Service] ¡á 1999.12.23 Certificated for ISO 9002 of Deokyang Gas Corp.

	¡á 2000.07 Complete and move into the new building of Deokyang Gas Corp. ¡á 2001.02 Established worldhitech ¡á 2002.04 Renamed company from Deokyang Gas Corporation to Deokyang Energen Corporation. ¡á 2002.09 5th plant established and started to produce (DalCheon, Ulsan-si) ¡á 2003.05 In Dalcheon, Ulsan Tube cylinder Inspection factory established ¡á 2004.03 Moved to a larger 4th factory and started to produce in Yeosu-si, Jeon-nam ¡á 2004.07 Acquired Certificate From KOLAS ¡á 2005.07 L-CO2 manufacturing plant started to construct in Seosan Plant ¡á 2005.10 In Dalcheon, Ulsan Tube cylinder Inspection factory expanded ¡á 2005.11 L-CO2 manufacturing plant completed and started to produce in Seosan Plant ¡á 2006.07 L-CO2 manufacturing plant expanded and started to produce Dry-ice in Seosan Plant ¡á 2006.09 Awarded the 1st prize of Society Contribution at Korean gas safefy competition ¡á 2006.10 Awarded the 1st prize at the 1st Ulsan industry prize