Isu Group
Corporate brand
UnclaimedIsu Group is a South Korean diversified business group operating across chemicals, electronics, construction, and pharmaceuticals.
Last updated August 24, 2026
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Overview
Isu Group, also known as Isu Co., Ltd., is a South Korean business group whose activities span chemicals, electronics, construction, and pharmaceuticals. The group traces its origins to Isu Chemical, established in 1969 by chemistry professors from Ewha Womans University. Its initial business focused on producing raw materials used in detergents and petrochemicals, placing the company within South Korea's developing industrial and chemical-materials economy. A major turning point came in 1995, when Isu Chemical was acquired by Kim Joon-sung, a former governor of the Bank of Korea. Under the new ownership, the business pursued diversification rather than remaining focused solely on chemical materials. That same year, it entered electronics through the acquisition of a printed circuit board manufacturer. The acquired PCB business was subsequently renamed Isu Petasys, creating a significant electronics manufacturing arm within the wider group. The group therefore developed from a specialist chemical producer into a multi-industry corporate structure. Its business scope includes chemical products and industrial materials, printed circuit boards and related electronics manufacturing, construction activities, and pharmaceutical operations. The available reference material does not provide a full list of subsidiaries, detailed product portfolios, current leadership, geographic revenue breakdowns, or the group's present corporate structure, so those aspects cannot be stated reliably here. Isu Group's positioning is best understood as that of a diversified industrial and technology-oriented Korean business group. Its portfolio combines process manufacturing and materials expertise with electronics components and additional businesses in construction and pharmaceuticals. The group's historical development illustrates a strategy of expansion through acquisition and sector diversification, particularly following the 1995 change in ownership. Isu Petasys is the clearest named operating business associated with this expansion, while Isu Chemical represents the group's original industrial foundation.
History
Isu Group's history began in 1969 with the creation of Isu Chemical. The company was founded by chemistry professors from Ewha Womans University and initially concentrated on chemical raw materials used in detergent production and petrochemical applications. This original focus placed the business in the materials and process-chemicals segment rather than in consumer branding. The company's strategic direction changed in 1995, when it was acquired by Kim Joon-sung, who had previously served as governor of the Bank of Korea. Following the acquisition, the company began diversifying beyond its original chemical activities. The expansion transformed Isu from a specialist chemical enterprise into a broader business group with interests in several industries. Also in 1995, Isu entered the electronics sector by acquiring a manufacturer of printed circuit boards. The acquired company was later renamed Isu Petasys. This transaction established an electronics manufacturing presence and became an important example of the group's post-acquisition diversification. Printed circuit boards connected the group to the supply chains of electronic equipment while complementing, rather than replacing, its original industrial-materials business. Over time, the group's activities came to encompass four principal areas identified in the available reference material: chemicals, electronics, construction, and pharmaceuticals. The chemical business retains the historical link to Isu Chemical, while the electronics business is represented by Isu Petasys. The reference material does not specify the dates of entry into construction or pharmaceuticals, nor does it provide enough information to reconstruct the names and chronology of all subsidiaries. Isu Group's documented development is consequently characterized by institutional continuity combined with portfolio expansion. It began as a university-founded chemical company, changed ownership in 1995, and then used diversification and acquisition to establish a multi-industry group. Detailed information about current management, headquarters, international operations, financial performance, and recent strategic decisions is not available in the supplied sources.
- 1995
Ownership changes
[1]Isu Chemical is acquired by Kim Joon-sung, a former governor of the Bank of Korea, after which the company begins a broader diversification process.
- 1995
Entry into electronics
[1]The group expands into electronics by acquiring a printed circuit board manufacturer that is later renamed Isu Petasys.
- 1969
Isu Chemical is established
[1]Isu Chemical is founded by chemistry professors from Ewha Womans University and begins producing raw materials for detergents and petrochemicals.
Products and positioning
A diversified South Korean industrial group combining chemicals, electronics manufacturing, construction, and pharmaceuticals.
Chemicals · 1969
Chemical raw materials
The group's original business was the production of chemical raw materials used in detergent manufacturing and petrochemical applications. These materials formed the industrial base from which Isu later diversified into other sectors. The supplied reference does not identify individual chemical products or current production specifications.
Electronics manufacturing · 1995
Printed circuit boards
Printed circuit boards became part of the group's portfolio through the 1995 acquisition of a PCB manufacturer. The acquired electronics business was later renamed Isu Petasys. The available material identifies the product category but does not provide a detailed breakdown by board type, end market, or current model range.
Construction
Construction services and activities
Construction is one of the industries in which Isu Group operates. The supplied reference does not specify the group's construction subsidiaries, project portfolio, geographic focus, or individual service lines.
Pharmaceuticals
Pharmaceutical products and businesses
Pharmaceuticals are identified as another area of Isu Group activity. No particular medicines, therapeutic categories, subsidiaries, or commercialization details are provided in the available reference material.
Brand decisions
1995
Acquisition of Isu ChemicalM&ABackground
The company founded as Isu Chemical was acquired by Kim Joon-sung, a former governor of the Bank of Korea.
Action taken
The new ownership initiated a diversification process that expanded the business beyond its original chemical focus.
Aftermath
The company developed into the multi-industry Isu Group, with activities in chemicals, electronics, construction, and pharmaceuticals.
1995
Acquisition of a printed circuit board manufacturerM&ABackground
As part of its post-acquisition diversification, Isu expanded into electronics manufacturing.
Action taken
The group acquired a printed circuit board manufacturer, which was later renamed Isu Petasys.
Aftermath
The acquisition established the group's electronics business and added PCB manufacturing to its industrial portfolio.
Sources1 sources
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