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Konoshima Chemical is one of the leading manufacturers of inorganic materials, mainly consisting of Magnesium compounds. Konoshima's eco-friendly, high-quality products are made from abundant natural resources, sea water. Since 1917, we have been developing our unique technologies. Today, Konoshima's advanced products are used in various applications and have an excellent reputation all over the world.

  • Magnesium Oxide [STARMAG]
  • High-purity Magnesium Oxide & Magnesium Carbonate
  • Magnesium Carbonate
  • Magnesium Hydroxide
  • Pharmaceutical Products
  • Food Additive Products
  • Calcium Carbonate Light
  • Activated Calcium Carbonate [CALSEEDS]
  • Magnesium Hydroxide for Flame Retardant [MAGSEEDS]