Nihon Funen Co., Ltd.

Nihon Funen Co., Ltd. (日本フネン株式会社) is a Japanese manufacturer of building materials headquartered in Yoshinogawa, Tokushima Prefecture. The company traces its origins to a 1972 joint project involving three companies of the F Group — Fukawa Seisakusho, Fuji Furniture, and Nihon Flash — together with Nippon Oil & Fats, which researched and developed horizontal and vertical building members using shirasu, a volcanic deposit material. As urbanization drove buildings toward higher density, taller heights, and greater complexity, demand grew for non-combustible, fire-preventive, and fire-resistant performance. In response, Nihon Funen was formally established on January 31, 1974. Since its founding, the company has expanded its product development beyond basic fire performance to address themes such as thermal insulation, soundproofing, crime prevention, and earthquake resistance, using new materials. Its mainstay is door products, including entrance doors certified as specific fire-prevention equipment and fire-prevention equipment, steel joinery, steel lightweight joinery, sliding doors, pipe shafts (PS), and trunk rooms. It also produces ceramic products such as concrete secondary products (exterior walls, columns, ceilings, monuments, gateposts, flower stands, eaves) and environmental products including LED lighting and other non-combustible building materials. The company operates under the management philosophy "Security & Amenity — enriching society together" and the corporate motto "Creation, Innovation, Challenge." It has adopted CIM (computer-integrated manufacturing) and an amoeba management system of small-group profit centers with delegated authority. As of April 2026 it reported 385 employees and sales of 17.05 billion yen for the fiscal year ended March 2026, with capital of 314 million yen. Its representative director and president is Norio Kume. It is a member of several industry associations including the Architectural Openings Association, the Japan Sash Association, the Japan Shutter and Door Association, the Living Amenity Association, the Japan Steel Lightweight Door Council, and the Japan GR Association.

Nihon Funen Co., Ltd. was formally established on January 31, 1974, but its roots go back to 1972. In that year, a joint project was launched by three companies of the F Group — Fukawa Seisakusho Co., Ltd., Fuji Furniture Co., Ltd., and Nihon Flash Co., Ltd. — together with Nippon Oil & Fats Co., Ltd. The project focused on research and development of horizontal and vertical building members using shirasu, a distinctive volcanic deposit material. This early emphasis on patents and cutting-edge technology became part of the company's DNA. During the period of high economic growth, buildings in urban areas became increasingly dense, tall, and complex. This created demand for non-combustible, fire-preventive, and fire-resistant performance, and Nihon Funen was born in 1974 to meet those needs. From its base in Tokushima Prefecture, the company expanded its product development to address additional requirements for building members, especially doors: thermal insulation, soundproofing, crime prevention, and earthquake resistance. It pursued new materials and broadened its sales. The company also moved into ceramic products, which allow a wide range of applications as building materials, and environmental products that contribute to energy savings and CO2 reduction. It adopted CIM (computer-integrated manufacturing) early, linking sales, manufacturing, development, and administration departments through networks for speedy and organic collaboration. Under the corporate philosophy of "leave to machines what machines can do, and challenge the creative domains that only people can pursue," it invested in advanced equipment and human resource development. Management innovation included the introduction of amoeba management, a small-group profit-center system originally developed by Kyocera Corporation, which delegates authority and pursues profitability and productivity. The company's motto is "Creation, Innovation, Challenge." Its management philosophy is "Security & Amenity — enriching society together." As of April 2026, it employed 385 people and reported sales of 17.05 billion yen for the fiscal year ended March 2026, with capital of 314 million yen. The representative director and president is Norio Kume. The company remains active in the Japanese building materials market.

• 2026

  Reported 385 employees and sales of 17.05 billion yen for fiscal year ended March 2026.

• 1974

  Nihon Funen Co., Ltd. formally established on January 31.

• 1972

  Joint project launched by F Group companies and Nippon Oil & Fats to develop building members using shirasu volcanic deposit material.

A technology-driven building materials manufacturer focused on safety, security, and environmental sustainability in living environments.

• Entrance doors

  Specific fire-prevention equipment and fire-prevention equipment doors.

• Steel joinery

  Steel frames and doors for buildings.

• Ceramic products

  Concrete secondary products including exterior walls, columns, ceilings, monuments, gateposts, flower stands, eaves.

• Environmental products

  LED lighting products and other non-combustible building materials.

1. 1日本フネン株式会社nihonfunen.co.jp
2. 2会社情報 | 日本フネン株式会社nihonfunen.co.jp
3. 3Nihon Funen Co., Ltd. (Japan) - Wikidatawikidata.org