共立マテリアル List of Products and Services

Our company not only engages in purchasing and selling but also owns its own mine in Amakusa City, Kumamoto Prefecture. "Amakusa porcelain stone" is a rare domestic ceramic raw material that can be fired alone to create porcelain. Due to its unique stone texture and material feel, we have achieved numerous results in the exterior market. ■ Our Strengths Leveraging our strengths as a raw material manufacturer, we deliver materials after conducting high-precision chemical analysis and particle size measurement in-house. ■ Applications - Tableware - Tiles - Sanitary ceramics - Insulator materials, etc. ■ Some Representative Analysis Values (partial) SiO2 (wt%) - Amakusa Grade 3: 77.6 - Amakusa Low Iron Low Firing: 77.3 - Amakusa Low Iron High Firing: 78.0 *For more details, please refer to the related links or feel free to contact us！