| 会社名 | Group | 親会社 | 子会社 | 得意先 | 仕入先 | 業務提携 | 銀行等 | 株主等 |
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| Mikuni RK Corporation | ||||||||
| アール・ビー・コリア株式会社 | ||||||||
| アール・エス・コリア株式会社 | ||||||||
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| Rinnai Taiwan Corporation | ||||||||
| 上海燃宝控制器有限公司 | ||||||||
| Shanghai Rinnai Thermo Energy Engineering Co., Ltd. | ||||||||
| アール・エス・コリア株式会社 | ||||||||
| アール・ビー・コリア株式会社 | ||||||||
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| リンナイコリア株式会社 | ||||||||
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| 三国RK精密株式会社 | ||||||||
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| 上海林内熱能工程有限公司 | ||||||||
| 上海燃宝控制器有限公司 | ||||||||
| 台湾林内工業股份有限公司 | ||||||||
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Rinnai Corporation has completed the acquisition of all shares of MT Industrial S.A.C., a Peru-based housing equipment sales company. The board approved the acquisition on October 23, 2025, the agreement was signed on October 24, and payment has been finalized.
Rinnai Corporation’s MBC‑332VC series of color controllers has been awarded the Red Dot Design Award, marking the company’s fourth Red Dot recognition. The award, presented by the Design Center North Rhine‑Westphalia, follows earlier wins for the G:LINE (now G:101) built‑in hobs in 2020 and the G:201 in‑wall oven and Leggiero waterless pot in 2022.
Rinnai Corporation has developed the world’s first 100% hydrogen combustion technology for residential water heaters. Leveraging its extensive experience in gas appliance development, Rinnai addressed safety concerns such as explosion risk and combustion stability to create a clean, zero‑CO2 heating solution.
Rinnai Corporation, headquartered in Nagoya, has been selected as a constituent of the FTSE Blossom Japan Sector Relative Index. The index, compiled by FTSE Russell, evaluates environmental impact and climate risk management in a sector‑neutral manner and is adopted by Japan’s Government Pension Investment.
Rinnai Corporation’s Leggiero waterless cooking pot received the iF Design Award 2022 in the Product segment, marking its second major design accolade after the Red Dot Award 2022. The award was selected from about 11,000 entries by 132 experts.