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Other Disclosures4461DKS Co.Ltd.Materials and Chemicals

Daiichi Kogyo Seiyaku and 晉一化工 to make their first joint appearance at TPCA Show 2026

Daiichi Kogyo Seiyaku will exhibit for the first time at Taiwan’s TPCA Show 2026 jointly with its Taiwanese group company, 晉一化工. The companies will showcase electronic materials under development for semiconductor packaging, high-speed 5G/6G communications and thermal management.

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Announced details

UV-curable moisture-proof substrate coating (under development)Low-dielectric, flame-retardant resin “MP-1320” (under development)Single-phase immersion-cooling refrigerant “L-5133 series” (under development)
Applicable field (uses covered by this announcement)
Semiconductor packagingHigh-speed 5G/6G communicationsThermal managementAI serversData centers
Launch date20 October 2026 (scheduled; exhibition opening date)
What the company reported numerically
Quantitative Effects

Shorter processes (figure: Not disclosed)

Relationship between the counterparty and the company
DKS Co.Ltd.4461
Relationship with the Company

A Taiwanese group company. The two companies will jointly exhibit at TPCA Show 2026.

Counterparty晉一化工股份有限公司

A group company of Daiichi Kogyo Seiyaku headquartered in Nangang District, Taipei, Taiwan. The chairperson is Lai Hongrong (賴宏榮).

Location (as indicated in this announcement)

Taipei Nangang Exhibition Center (TaiNEX, Taipei), 1 Jingmao 2nd Road, Nangang District, Taipei, Taiwan

Impact on Business Performance

The companies aim to expand the business in the Taiwanese market. The specific impact on financial results is Not disclosed.

The company does not address Contract Value / Offering price.

Source (materials cited by the company)

Official TPCA Show 2026 website

Announced details
ItemDetails
Names of Products / Services CoveredUV-curable moisture-proof substrate coating (under development), Low-dielectric, flame-retardant resin “MP-1320” (under development), Single-phase immersion-cooling refrigerant “L-5133 series” (under development)
Counterparty晉一化工股份有限公司
Counterparty overviewA group company of Daiichi Kogyo Seiyaku headquartered in Nangang District, Taipei, Taiwan. The chairperson is Lai Hongrong (賴宏榮).
Relationship with the CompanyA Taiwanese group company. The two companies will jointly exhibit at TPCA Show 2026.
Launch date20 October 2026 (scheduled; exhibition opening date)
Applicable areaSemiconductor packaging, High-speed 5G/6G communications, Thermal management, AI servers, Data centers
LocationTaipei Nangang Exhibition Center (TaiNEX, Taipei), 1 Jingmao 2nd Road, Nangang District, Taipei, Taiwan
Quantitative EffectsShorter processes (figure: Not disclosed)
Impact on Business PerformanceThe companies aim to expand the business in the Taiwanese market. The specific impact on financial results is Not disclosed.
SourceOfficial TPCA Show 2026 website
Items this document does not state (8)
Contract ValueOffering priceContract DateAward/certification nameAwarding / certifying bodyRegistration number and expiry dateLocation scaleUsage history

These are items the company does not state in this document. We do not leave them blank, nor fill them in from other sources or by inference.

The reasons the company gives

The company's own explanation, not something inferred from the numbers.

To address customer challenges and expand the business in the Taiwanese market by proposing solutions that combine the technologies of both companies.

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Daiichi Kogyo Seiyaku and 晉一化工 to make their first joint appearance at TPCA Show 2026 | DKS Co.Ltd. (4461) timely disclosure | Komori