Maru-T Ohtsuka Group |
Ohtsuka Brush Mfg. Co., Ltd.
Handy Crown Corporation
Seven Lease Co.,Ltd.
Maru-T Build Co.,Ltd.
Maru-T Net Systems Co.,Ltd.
Maru-T TOHOKU ISHIBASHI Co.,Ltd.
JOSHIN JUSHI Co.,LTD.
Polymer Plus Corporation
OT Trading Co.,Ltd.
Daiwa Co.,Ltd.
Overseas Network