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Creates elements of Better world


OCI provides TDI, which is used around the world in foam type products such as the components of vehicles, beds, paints, and adhesives.

Product Features




It is a basic material of polyurethane (PU) that is widely used in industrial fields and daily living such as the components of vehicles, shoes, furniture, and beds as well as paints and adhesives.

Manufacturing Process

It is manufactured by reacting the toluenediamine (TDA) generated by hydrogenation of dinitrotoluene (DNT) with phosgene (COCl2).

Business Status

Gunsan plant

Gunsan Plant

OCI, which started manufacturing TDI in 1990 on a scale of 25,000t/yr at its plant in Gunsan plant, became equipped with the current 50,000-ton production scale in 2004 and now provides TDI around the world, including to China, Turkey and Southeast Asia, as well as major domestic companies.

Business Foundation Year


Production Plant

Plant in Gunsan, Jeollabuk-do / Capacity: 50,000t/yr

Major Buying Countries

China, Turkey, Southeast Asia, Korea, etc.

Key Point

  • Major Domestic TDI Production Company

    Major domestic TDI producer that stably provides products and maintains close relationships with demanders at home and abroad.

  • Production Know-How

    Experience and technology accumulated over 30 years.


  • Product Name : Toluene Di-Isocyanate (TDI)
  • Chemical Formula : CH3C6H3(NCO)2
  • Certification : ISO 9001, ISO 14001, KOSHA 18001, OHSAS 18001, KGS 18001
  • Contact Number : 82-2-727-9495, 82-2-727-9469
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