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Petrochemical industry (No.1 as of 2019)
Korea is the world’s 5th largest chemical production country. Ulsan accounts for around 29 percent of Korea's total production, and 279 companies in Ulsan recorded KRW 102 trillion in production, the biggest scale among the city’s three major industries, and USD 26.9 billion in export in 2021, accounting for 36.2 percent of the nation’s chemical industry. Ulsan is home to Asia's largest chemical industrial complex (2.4 billion ㎡) as well as some of the leading chemical companies in the world such as SK Energy, S-oil, Eastman, Bp, Mobil and Dupont. In addition, Ulsan will realize its vision to become Asia's top advanced chemical industry city by 2030 through building national research centers and R&D facilities including Ulsan Fine Chemical Industry Center, Ulsan New Chemical Commercialization Center of Korea Chemical Research Center, and Biochemical Commercialization Center, and developing new industries in biochemistry, fine chemistry, and nanochemistry.
Status of Ulsan’s Chemical Industry (No.1 as of 2019)

Output(26.8%) - Ulsan: KRW 77,951,000 million, Korea: KRW 291,019,600 million
Added-Value(18.8%) - Ulsan: KRW 16,200,900 million, Korea: KRW 86,315,600 million
Number of Businesses(2.7%) - Ulsan: KRW 24.8 billion, Korea: KRW 906.2 billion
Number of Workers(6.8%) - Ulsan: KRW 2,536,600 million, Korea: KRW 37,167,500 million

Primary Petrochemical Products of Companies in Ulsan
(Unit: 1,000 tons/year)

- Naphtha, etc.
- Ethylene
- LDPE
- Naphtha Cracking Center
- hDPE
- edc
- vcm
- pvc
- Ethanol
- Acetaldehyde
- Ethyl acetate
- Propylene
- Polypropylene
- Acrylonitrile
- Polypropylene glycol
- Propylene oxide
- Propylene glycol
- C4 mixture
- mma
- Pmma
- Butadiene
- sbr
- sb-latex
- h-RPG
- Petroleum resin
- Normal paraffin
- sm
- PS/EPS
- BTX extraction plant
- Benzene
- Alkylbenzene
- ABS
- Maleic anhydride
- Toluene
- caprolactam
- Maleic anhydride
- Xylene
- Ortho-xylene
- Phthalic anhydride
- Para-xylene
- TPA
- Methanol
- Glacial acetic acid
- DMT
- MTBE
