Nagahori Corporation (8139.T) manufactures, wholesales, imports, exports, and sells gemstones, pearls, precious metals, and a broad range of jewelry products including rings, necklaces, earrings, bracelets, pendants, engagement rings, and marriage rings under brands such as Proponaire, Wisp, Disney, Scavia, and Nadia; it also operates a building rental segment leasing company-owned real estate properties and a solar power generation business selling electricity. The company serves over 500 customers worldwide, including department stores, specialty stores, and distributors, primarily in Japan with international trade operations. Founded on June 19, 1962 and headquartered at 15-3, 1-chome Ueno, Taito-ku, Tokyo 110-8546, Japan, Nagahori maintains domestic branches in Osaka and a plant in Mobara, Chiba, alongside four domestic and one overseas consolidated subsidiaries. In fiscal year 2025 (ended March 2025), the company filed its corrected securities report and corporate governance report, reflecting ongoing regulatory compliance and operational transparency amid standard financial disclosures. Nagahori continues to leverage its global supply chain for high-quality, cost-competitive materials while focusing on in-house design and market-responsive product development across its diversified segments.