Chugai Mining Co., Ltd. is principally engaged in the operation of precious metal business. The Company operates in six business segments. The Precious Metal segment is engaged in the sale of precious metals, artifacts and jewelries, the production and sale of gold, silver, platinum and palladium, as well as the purchase and sale of nonferrous metals which contain gold and silver. The Jewelry segment is engaged in the purchasing and sale of diamond and other jewelries. The Real Estate segment is involved in the subdivision and leasing of condominium buildings, as well as the trading, brokerage, leasing, management and planning development of real estate. The Machinery segment purchases and sells used machine tools, sheet metal machines and others. The Investment segment is engaged in the possession, trading and operation of securities. The Research and Development segment researches and develops recyclable energy.