D-I Industrial Co., Ltd.

Design, Engineering, Manufacturing, sales and service of Transmission

Design, Engineering, Manufacturing, sales and service of PTO

Design, Engineering, Manufacturing, sales and service of Marine steering system

Design, Engineering, Manufacturing, sales and service of Side-thruster

Design, Engineering, Manufacturing, sales and service of all kinds of shipping equipments

Specialized transmission design and manufacturing

Machining of machine, gear

Miam Co.,Ltd.

Manufacturing of Side thruster

Manufacturing of Steering system

Import of Electronic control lever

Import of Watermakers

Import of Hydraulic machines and parts

DMI Co.

Carburizing heat treatment

High frequency heat treatment

Machining before/after heat treatment

Samwoo metal Co.,Ltd.

Copper casting

Aluminum casting