# Samsung Electro-Mechanics signs MOU with Sumitomo Chemical to form JV for glass core substrates

Samsung Electro-Mechanics signed an MOU with Sumitomo Chemical Group to establish a joint venture for manufacturing 'Glass Core', a key material for next-generation semiconductor package substrates. Samsung will be the majority investor, with the JV headquarters at Dongwoo Fine-Chem's Pyeongtaek site.

- Type: Partnership
- Announced: 2025-11-05
- Where: Pyeongtaek, South Korea
- Status: announced
- Products: glass core for package substrates
- Sectors: [Semiconductors and Industrial Electronics](https://endata.com/sectors/semiconductors-electronics.md)

## Companies

- [Samsung Electro-Mechanics](https://endata.com/companies/15109.md)
- [Samsung Electro-Mechanics](https://endata.com/companies/15109.md) (partner)
- [Sumitomo Chemical](https://endata.com/companies/20503.md) (partner)
- [Dongwoo Fine-Chem](https://endata.com/companies/50120.md) (partner)

## Sources

- [m.samsungsem.com](https://m.samsungsem.com/global/newsroom/news/view.do?id=9850), 2025-11-05: "Through this MOU, Samsung Electro-Mechanics, Sumitomo Chemical, and Dongwoo Fine-Chem will leverage their respective technological strengths and global networks to establish manufacturing and supply capabilities for 'Glass Core' and accelerate market expansion."
- [ajupress.com](https://www.ajupress.com/view/20251105095310368), 2025-11-05: "Glass cores are a game-changer for the future substrate market."
- [barchart.com](https://www.barchart.com/press-releases/35925269/samsung-electro-mechanics-signs-mou-with-sumitomo-chemical-group-to-establish-a-joint-venture-for-glass-core-used-in-package-substrates), 2025-11-05: "Samsung Electro-Mechanics announced on the 5th that it has signed a memorandum of understanding (MOU) with Sumitomo Chemical Group to establish a joint venture (JV) for manufacturing 'Glass Core,' a key material for next-generation package substrates."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.