Major customers (titles omitted)
- Mitsubishi Heavy Industries Engine & Turbocharger Co., Ltd.
- Mitsubishi Heavy Industries Corporation
- Mitsubishi Logis Next Co., Ltd.
- Mitsubishi Power Corporation
- Komatsu Manufacturing Co., Ltd.
- Mitsubishi Fuso Truck and Bus Co., Ltd.
- Caterpillar Japan LLC. Ltd.
- IHI Turbo Co., Ltd.
- Kawasaki Heavy Industries Co., Ltd.
- IJTT Inc.
- Okubo Gear Industry Co., Ltd.
- TBK Co., Ltd.
- Maruei Industry Co., Ltd.
- Global Components Technology Co., Ltd.
- Taiho Kogyo Co., Ltd.
- Toyo Equipment Industry Co., Ltd.
- Daiki Machinery Co., Ltd.
- Japan Power Brake Co., Ltd.
- Yasunaga Co., Ltd.
- Shinko Manufacturing Co., Ltd.
- Itao Iron Works Co., Ltd.
- Knorr Bremze Commercial Vehicle System Japan Co., Ltd.
- Jushin Manufacturing Co., Ltd.
- Kuriyama Corporation
- Matsuyama Corporation
- Hikari Manufacturing Co., Ltd.
- Kubota Co., Ltd.
- Orient Shoji Co., Ltd.
- Tsudakoma Industry Co., Ltd.
- Yamate Corporation Inc.
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- Major Customers
