Maruo Calcium Co., Ltd. engages in the manufacture and sale of calcium carbonates. Its products include calcium carbonates for paints, rubber, synthetic resin, drugs, food products, and inorganic chemicals. It also offers hydrated lime and quicklime, talc, clay, and silica powder. The company was founded by Gihei Maruo on October 1, 1926 and is headquartered in Akashi, Japan.