Global Leading Acrylonitrile Supplier

About Us

Creating
For Tomorrow

Development
and Leap Forward
Sept 2019. Dinner commemorating the 50th anniversary of Tongsuh Petrochmical Corporation
2011 . 06
  • Started construction of the No.4 AN plant and the No.4 sodium cyanide plant
2012 . 12
  • Completed construction of the No.4 AN plant (245,000 MTs) / No.4 sodium cyanide plant (28,000 MTs)
2013 . 12
  • Completed construction of the acetonitrile plant (11,000 MTs)
2014 . 09
  • Awarded Ulsan Social Welfare Grand Prize(Corporate Welfare Sector)
2019 . 09
  • 50th anniversary celebration
2021 . 10
  • ISCC(International Sustainability & Carbon Certification) Plus certification
Growth and Change
1971 The No.1 AN plant construction site
1969 . 09
  • Established as a joint venture between Chungju Fertilizer in Korea and Skelly Oil in the United States
1970 . 02
  • Hanil Synthetic Fiber Co., Ltd. acquired a stake from Chungju Fertilizer and became a 15% shareholder
1972 . 10
  • Completed construction of the No.1 AN plant (27,000 MTs)
1973 . 10
  • Hanil Synthetic Fiber Co., Ltd. acquired a stake from Chungju Fertilizer and became a 50% shareholder
1974 . 10
  • Japan's Asahi KASEI acquired a stake from Skelly Oil of the United States and became a 25% shareholder
1975 . 12
  • Japan's Asahi KASEI acquired a stake from Skelly Oil of the United States and became a 50% shareholder
1978 . 11
  • Completed construction of the No.2 AN plant (53,000 MTs)
1985 . 08
  • Completed construction of the No.1 sodium cyanide plant (6,000 MTs)
1988 . 09
  • Completed construction of the No.2 sodium cyanide plant (6,000 MTs)
1993 . 11
  • Completed the capacity expansion project for the No.2 sodium cyanide plant (12,000 → 18,000 MTs)
1995 . 12
  • Completed construction of the acrylamide (5,000 MTs) and EDTA (3,000 MTs) plants
1996 . 01
  • Introduced the PSM(Process Safety Management) system
1996 . 05
  • Acquired ISO 9001 quality management system certification
1998 . 05
  • Japan's Asahi KASEI acquired a 50% stake from Hanil Synthetic Fiber Co., Ltd. and became a 100% shareholder.
2003 . 04
  • Completed construction of the No.3 AN plant (200,000 MTs) and the No.3 sodium cyanide plant (15,000 MTs)
2008 . 02
  • Successfully completed the world's first propane-based AN manufacturing process demonstration operation
2008 . 03
  • Acquired ICMC(International Cyanide Management Code) certification
2008 . 10
  • Acquired ISO 14001 certification