| Company name | Group | Parent | Subsidiary | Customer | Supplier | Alliance | Bank | Shareholder |
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| JOUBERT Plywood | ||||||||
| PT. NANKAI INDONESIA | ||||||||
| Nanritsu Corporation | ||||||||
| Nankai Chemical Co., Ltd. | ||||||||
| 仰星監査法人 | ||||||||
| ETABLISSEMENTS GUY JOUBERT | ||||||||
| INTERACTIVE BROKERS LLC | ||||||||
| PT.NANKAI INDONESIA | ||||||||
| ROLKEM SAS | ||||||||
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| Nankai Education Foundation | ||||||||
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Founded.
Established Nankai Prairie Wood Co., Ltd. in Shinshioya-cho, Takamatsu City, Kagawa Prefecture, to manufacture and sell plywood.
Established.
Commenced production of ceiling panels.
Established Yashima factory in Takamatsu-cho, Takamatsu City, Kagawa Prefecture.
Established Shikoku Construction Equipment Co., Ltd. (now Nanritsu Co., Ltd.), a 70% owned subsidiary and current consolidated subsidiary.
Developed and began production of 'Nankai Ceiling Panels (laminated ceiling)'.
Completed Gōtō factory in Gōtō-cho, Takamatsu City, Kagawa Prefecture, with a monthly plywood production capacity of 1,650,000 square meters.
Established Nankai Port Shipping Co., Ltd., a 100% owned subsidiary and current consolidated subsidiary.
Completed Shido factory in Shido-cho, Ogi-gun, Kagawa Prefecture (now Sanuki City), and began operation as a prototype factory for ceiling panels.
Relocated headquarters to Matsufuku-cho, Takamatsu City, Kagawa Prefecture.
Changed corporate names to Nankai Electric Wire Trading Co., Ltd. and Nanritsu Co., Ltd.
Transferred production equipment from Yashima factory to Shido factory and discontinued Yashima factory.
Listed on the Second Section of the Osaka Stock Exchange (Special Designated Stock).
Tokyo Stock Exchange Second Section (Specially Designated Stock).
Reclassified to the Second Section of the Osaka Stock Exchange.
Transferred to the Second Section
Established a joint venture, SENTUHAMONI SD. BHD., in Malaysia as a material procurement base (30% ownership).
Established and commenced operation of a logistics center in Nagao-cho, Ogi-gun, Kagawa Prefecture (now Sanuki City).
Obtained ISO 9001 certification (audit registration) for the design, development, and manufacturing of residential interior materials (ceiling, storage, flooring, and building fittings).
Acquired additional shares of SENTUHAMONI SD. BHD., increasing ownership to 65%.
Applied to establish a joint venture PT. NANKAI INDONESIA in Indonesia as a material procurement base (95% owned subsidiary, currently consolidated subsidiary).
Stopped operation of the Gōtō factory.
Established Nankai System Works Co., Ltd. (100% owned subsidiary).
Acquired additional shares of SENTUHAMONI SD. BHD. (100% ownership).
Acquired additional shares of Nanritsu Co., Ltd. (100% ownership).
Acquired shares of Nankai Chemical Co., Ltd. (20% ownership, associate under equity method).
Dissolved Nankai System Works Co., Ltd. (100% owned subsidiary) to improve group management efficiency.
Dissolved SENTUHAMONI SD. BHD. and EDA KILANG PAPAN SD. BHD. (100% owned subsidiary of SENTUHAMONI SD. BHD.).
Established Nankai Building Materials Trading (Shanghai) Co., Ltd. in the People's Republic of China (100% owned subsidiary).
Tokyo Stock Exchange Second Section
Opened and started operation of the Rumajan factory as the second factory of PT. NANKAI INDONESIA in Indonesia.
Established NP ROLPIN SAS in Bordeaux, France (100% owned subsidiary, currently consolidated subsidiary).
NP ROLPIN SAS acquired the plywood manufacturing and sales business of ROLPIN SAS.
NP ROLPIN SAS acquired shares of ROLKEM SAS (100% ownership, currently consolidated subsidiary).
Liquidated Nankai Building Materials Trading (Shanghai) Co., Ltd. (100% owned subsidiary).
Launched the new brand 'Storage Life NANKAI'.
Opened Tokyo showroom.
Tokyo Stock Exchange Standard Market
Obtained certification (audit registration) for the ISO 9001:2015 quality management system and ISO 14001:2015 environmental management system at PT. NANKAI INDONESIA.
Nankai Prairie Wood has announced the "Movable Shelf Storage Plan Collection," designed to reduce the burden of planning, estimating, ordering, and construction at new construction and renovation sites. The collection features a wide range of storage plans combining 5mm pitch Art Lamber, 5mm pitch resin shelves, and Arm Hang Shelf Column C, and is scheduled to begin sales around December 2026.
On November 10, 2026, Nankai Prywood will open a storage-focused experiential showroom in Hakata-ku, Fukuoka City. This will be the company’s fifth nationwide location, and it will feature the concept of a "shared household home," allowing visitors to experience the flow of daily life and storage plans for a family of four in a real residential scale.
Nankai Plywood has started accepting orders for the shelf board set for the gas clothes dryer 'Kanta-kun,' adding two trendy gray colors. The new colors are dark gray and pearl gray, which harmonize with a variety of interior styles.
Nankai Prairie Wood Co., Ltd. has added three new wood-grain pattern colors to its Pillow Shelf Set V Series, a shelf storage part for open closets, and began taking orders on October 1, 2026. Including the existing two colors, the series now offers five colors, allowing customers to choose hues that harmonize with their interior. The benefits of open closets and cost reduction effects are also highlighted.
Nankai Plywood Co., Ltd. will add Bright Walnut, Natural Birch, and Ash Walnut to its V Series shelf sets for open closets, with sales beginning in early October 2026. Together with the existing Shell White and Shina options, the series will be available in five colors to coordinate with flooring and wallpaper.
Nankai Plywood Co., Ltd. will gradually resume operations for Lumist aluminum open-staircase components starting September 1, 2026. Operations had been temporarily suspended because Middle East conditions delayed component procurement. New drawings, estimates, and order acceptance will also begin that day, and smoke-type frames are scheduled to be available from November 2.
Nankai Plywood will hold a free five-day webinar for the renovation industry starting September 14, 2026. Previous webinars recorded 91% satisfaction. This session will share ideas for reducing the burden of stairs on older adults and the latest know-how. With 73% of renovation customers aged 50 or older, demand for single-story renovations is growing.
Nankai Plywood has added two on-trend gray colors—dark gray and pearl gray—to its shelf set for the popular Kanta-kun gas clothes dryer, used in washrooms and laundry rooms. Sales are scheduled to begin around October 2026. With the three existing colors, the lineup will total five colors to meet varied interior design needs. The new shades complement modern and Scandinavian-style interiors and help create coordinated home storage plans.
Nankai Plywood Co., Ltd. has decided to uniformly increase the design prices of all products by 10% due to the escalation of raw material and logistics costs caused by the tightening of the Middle East situation. This is a measure to maintain quality and ensure stable supply. Customers are asked to understand the increased burden and cooperate.
Nankai Plywood announced that due to the escalation of the Middle East situation, the rising costs of raw materials and logistics will lead to a uniform 10% increase in the design prices of all products.