Showa Chemical Industry Co., Ltd. is primarily engaged in diatomaceous earth and pearlite business. The filter aids business engages in the manufacture, sales, supply and business contracting of diatomaceous earth products. The building materials and fillers business is engaged in the manufacture, sales, contracting of diatomaceous earth products. The chemical products business is engaged in the purchase, sales of related products. The other products business is engaged in the purchase, sales of other products.
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