OCI

OCI Company Ltd. is a South Korean chemical company headquartered in Seoul. The business was established in 1959 as Oriental Chemical Industries, a name that reflected its original focus and was later abbreviated into the OCI identity. Its history is connected with the development of South Korea's domestic chemical and alkali industries: the company established the country's first soda ash factory and contributed to the industrialization of chemical-material production. The company has operated through several corporate identities. In 2001, Oriental Chemical Industries merged with Korea Steel Chemical and adopted the name DC Chemical. In 2009, the company returned to the OCI name, using the initials of its former English name while assigning them the newer interpretation "The Origin of Chemical Innovation." These changes represented shifts in corporate identity while retaining continuity with the company's chemical-industry heritage. OCI's publicly described product portfolio includes polycrystalline silicon, hydrogen peroxide, fumed silica, coal tar pitch, BTX, and other chemical materials. These products serve industrial supply chains rather than being primarily consumer-facing goods. Polycrystalline silicon is associated with high-purity materials applications, including the solar and electronics value chains. Hydrogen peroxide is used in chemical processing and industrial cleaning or oxidation applications, while fumed silica is used as a performance additive in products such as coatings, sealants, plastics, and other formulated materials. Coal tar pitch and BTX are chemical and carbon-industry materials used in downstream industrial processes. The supplied reference material identifies OCI as a chemical company and places its headquarters in Seoul, but it does not provide a complete account of its current subsidiaries, production footprint, management team, ownership structure, financial performance, or geographic sales distribution. Accordingly, this dossier treats OCI primarily as a corporate industrial-materials brand and does not infer additional corporate relationships or market statistics. Its positioning is best described as a producer of foundational and specialty chemical materials used by industrial customers, including parts of the semiconductor-materials and broader advanced-materials supply chains.

OCI was founded in 1959 by Lee Hoi-rim under the name Oriental Chemical Industries. Its early development coincided with South Korea's postwar industrial expansion and the effort to establish domestic capacity in basic chemicals. The company is described as having built the country's first soda ash factory, an important step in the development of the national alkali industry. This early role positioned Oriental Chemical Industries as an industrial producer rather than a consumer brand, supplying materials used by other manufacturing sectors. For much of its early identity, the company operated under the English name Oriental Chemical Industries and its corresponding Korean corporate name. The later OCI acronym derives from this former name. The business subsequently broadened or reorganized its corporate base through a significant transaction in 2001, when Oriental Chemical Industries merged with Korea Steel Chemical. Following the merger, the combined company was renamed DC Chemical. The DC Chemical identity lasted for approximately eight years. In 2009, the company reverted to the OCI name. The restored name maintained a connection to the historical initials of Oriental Chemical Industries, while the company gave the letters a new corporate interpretation: "The Origin of Chemical Innovation." This reframing presented OCI as a continuing chemical-industry enterprise with an innovation-oriented identity rather than simply a company retaining an old abbreviation. The product portfolio associated with OCI includes polycrystalline silicon, hydrogen peroxide, fumed silica, coal tar pitch, BTX, and other chemical-related materials. Together, these products indicate a business serving industrial and technology-linked supply chains. Polycrystalline silicon is a high-purity material used in advanced manufacturing contexts, including photovoltaic and electronics-related value chains. Hydrogen peroxide is a versatile industrial chemical, while fumed silica is a specialty additive used to modify the performance of formulated products. Coal tar pitch and BTX are intermediate or process materials connected with chemical and carbon-intensive industries. The available reference material does not establish a detailed chronology for individual plants, product launches, acquisitions, financial results, executive appointments, or international expansion. It also does not provide enough information to document current ownership, listing details, or the company's complete operating geography. The documented history therefore centers on OCI's founding, its contribution to South Korea's alkali industry, the 2001 merger and name change to DC Chemical, and the 2009 return to OCI. In current brand terms, OCI represents a South Korean industrial-chemicals company whose identity links historical chemical manufacturing with materials used in modern industrial and semiconductor-related supply chains.

• 2009

  Return to the OCI name

  [1]OCIen.wikipedia.org

  The company restored the OCI name, interpreting the initials as "The Origin of Chemical Innovation" while retaining their historical connection to Oriental Chemical Industries.

• 2001

  Merger with Korea Steel Chemical

  [1]OCIen.wikipedia.org

  Oriental Chemical Industries merged with Korea Steel Chemical and changed its corporate name to DC Chemical.

• 1959

  Company founded as Oriental Chemical Industries

  [1]OCIen.wikipedia.org

  Lee Hoi-rim founded the company in South Korea under the name Oriental Chemical Industries.

• 1959

  First South Korean soda ash factory established

  [1]OCIen.wikipedia.org

  OCI's predecessor established South Korea's first soda ash factory and supported the development of the country's alkali industry.

An industrial chemical and advanced-materials supplier focused on foundational chemical inputs and specialty materials for downstream manufacturing, including semiconductor-related applications.

• Advanced and semiconductor-related materials

  Polycrystalline silicon

  A high-purity silicon material used in technology and energy-related manufacturing chains. In OCI's described portfolio, it represents the company's connection to advanced materials and industries requiring controlled chemical purity, including photovoltaic and electronics-related applications.

• Industrial chemicals

  Hydrogen peroxide

  A versatile oxidizing chemical used across industrial processing, cleaning, treatment, and other chemical applications. It is part of OCI's core chemical-materials portfolio and can serve downstream manufacturers that require a dependable process chemical.

• Specialty chemical additives

  Fumed silica

  A finely divided silica material used as a functional additive in formulated products. Typical industrial roles for fumed silica include modifying rheology, reinforcement, and surface performance in products such as coatings, sealants, plastics, and related formulations.

• Carbon and industrial materials

  Coal tar pitch

  A carbon-industry material used in downstream industrial processes. Its inclusion in OCI's portfolio reflects the company's participation in heavy chemical and materials supply chains rather than only in specialty or high-technology chemicals.

• Petrochemical and aromatic chemicals

  BTX

  BTX refers to benzene, toluene, and xylenes, aromatic chemical materials used as industrial feedstocks and intermediates. OCI identifies BTX among its chemical-related products, but the available reference does not specify individual grades, facilities, or applications.

1. 1OCIen.wikipedia.org
2. 2OCI official websiteoci.co.kr