Chuo Malleable Iron – Factory Tour
Chuo Malleable Iron is a manufacturer of cast iron and aluminum components. The company mainly supplies to the automobile and electric industries and their major trading partners include Toyota Group companies such as Toyota Motor Corporation, Denso and Aisin Seiki. The company also produces steel furniture such as metal framed chairs which represents around four percent of their revenue.
Corporate Information
- Company: Chuo Malleable Iron Co., Ltd.
- Foundation: 1944
- Location: Headquartered in Aichi Prefecture
- Main Business: Manufacturing of cast iron and aluminum components
Chuo Malleable Iron – Lean Characteristics
Kanban System, JIT, Visual Management
Chuo Malleable Iron is a supplier of cast iron and aluminum components to the automobile and electric sectors. The company was founded in 1944 in Aichi Prefecture and started to supply for Toyota Motor Corporation in 1948.
The company has four production bases in Japan, three in the Tokai Region and one in Kumamoto Prefecture on the southern island of Kyushu as well as two production bases in China.
Their Nisshin Plant is the biggest plant that produces approximately 2,400 tons of cast iron products and 100 tons of aluminum products per month. The company uses electric furnaces in their efforts to achieve improved environmental outcomes and Just-In-Time fabrication of components based on a kanban system. The factory also features effective visual management examples.
The visit to the Nisshin Plant includes a presentation, a site tour and a Q&A session with senior managers.

It was great experiencing factories that have implemented simple and effective processes in the right manner. I enjoyed the stories from each sensei on their journey of kaizen and how they implemented it within their factories. Ben, Eri and Juan were incredible hosts, the whole tour was seamless and the content was really valuable. This…
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I have thoroughly enjoyed the lean tour to Japan. Not only have I learned lots of new concepts that I’m keen to implement in our business, but I also loved the cultural experiences and insight into the people of Japan. The tour organizers bent over backward to make us feel welcome and anticipate our every…
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Participating in the Shinka Management Lean Japan Tour was a transformative experience. The tour offered a rare opportunity to witness world-class lean practices in action at leading Japanese organisations. From visiting Toyota’s manufacturing facilities to learning directly from lean practitioners, every moment was an invaluable learning experience. The insights gained into kaizen, waste reduction, and…
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I want to congratulate the Shinka Management Team for the fantastic organisation of the Lean Japan Tour 2023. The tour has been a business and life-changing experience for sure. On Day 1 I was already enlightened, and all the bits and pieces of a huge TQM puzzle came together to form a clear picture. The tour…
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The program was well organised and structured. The whole Shinka team were amazing and very accommodating. To be honest I was not certain that lean was the right fit for our business. But the refresher in Japan has opened up my eyes as to how it can be practically applied. The lean tour has prompted…
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This is a great lean tour! Through the week together we have participated in visits to local companies, classroom sessions and hands on exercises. It’s impressive to see how the Toyota Way is really working efficiently and effectively. The organizers are professional, and have good relationships with the sites we visited. They know what the…
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The Shinka Management Lean Japan Tour is a professional development program run several times annually. The program includes a mix of lean and kaizen seminars, hands-on lean training and visits to several benchmark lean companies. For further information and program dates, see the lean tour overview page.
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