- R&B Engineering Co., Ltd.
- used construction machine crane, excavator pile driver earth, drill KOBELCO HITACHI KOMATSU, TADANO.
- Address:2-22-5, Oji, Kitaku Tokyo 1140002 Japan
- TOSEI TRADE Co., Ltd
- Komatsu Excavator: Pc200-3, Hitachi Excavator: Ex200-1, Komatsu Bulldozer: D50p-16, Sakai Road Roller: R2s, Hitachi Crawl Crane: Kh180-3.
- Address:Naganuma Bldg. , 2-13-13-606 Negishi, Taito Ward, Tokyo 110-0003 Japan.
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