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.

Los Alamos, New Mexico, United States
The Lean Japan Tour was one of the best quality training programs that I’ve attended. The information is provided in a good learning environment and the hands on activities along with in-plant tours to see the lean concepts in action helped reinforce the concepts. There is so much I learned on this trip that I…
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Rancagua, O'Higgins, Chile
The Lean Japan Tour allowed me to understand in a practical and conceptual way the real essence of just-in-time and operational efficiency. The dedication of the team and their attention to detail have made this an unforgettable experience.
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I attended the Shinka Management / Ai Group / JMAC Lean Japan Study Tour in 2010 – outstanding, highly recommended. (I don’t have this much fun when I go on holiday.) To see the cultural home of Lean Manufacturing is an experience you will never forget. Ride on a bullet train, walk the factory floor…
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Auckland, New Zealand
During the Lean Japan Tour I came to the realization that improving an organization is not through large capital investments alone. We were completely surrounded by examples of minor investments into small improvements that produced significant savings. The clever use of visual management techniques gave a clear understanding of the current situation and Ben who…
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Bulle, Fribourg, Switzerland
I’m back from Japan where I visited one of Toyota’s final assembly line and several Toyota suppliers. After my China industrial tour in 2018, I was really impressed by the lean manufacturing study tour organized by Shinka Management. The tour was an opportunity to better understand the history behind the Toyota Production System and to…
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It was an inspiring week with great learnings around lean and how it is applied across various levels of the supply chain. The tour also provides a nice glimpse into the Japanese culture with its amazing food and friendly people.
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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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