# Siam Kraft Industry to expand Kanchanaburi gypsum wallboard liner plant

Siam Cement Group subsidiary Siam Kraft Industry announced a $301 million phased investment to expand its Kanchanaburi gypsum wallboard liner plant in Central Thailand, adding 0.4 Mt/yr capacity. The expanded plant is expected to be operational by 2029.

- Type: Expansion
- Announced: 2026-08-25
- Where: Kanchanaburi, Central Thailand, Thailand
- Value: $301.0M
- Starts operating: 2029
- Status: announced
- Capacity: 0.4 Mt/yr
- Products: gypsum wallboard liner, premium linerboard
- Sectors: [Construction Materials](https://endata.com/sectors/construction-materials.md)

## Companies

- [Siam Kraft Industry](https://endata.com/companies/1318.md)
- [Siam Cement](https://endata.com/companies/6339.md) (partner)

## Sources

- [globalgypsum.com](https://www.globalgypsum.com/news/2529-siam-kraft-industry-to-expand-kanchanaburi-gypsum-wallboard-liner-plant), 2026-08-25: "The producer plans to expand the plant’s production capacity by 0.4Mt/yr."

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