We satisfy various needs from undergrounding distribution products to hybrid power generation & telecommunication systems.
Doi Seisakusho Co., Ltd has been offering System Technology for many industries such as power and telecommunication, road, railway, constructions over 88 years. We continue our challenge to offer and propose "Better solution for better life". Doi has been establishing world wide network between innovative manufacturer and supplier for future human life.
Doi offers wide ranges of undergrounding material and solution. And we can propose total solutions including Designs and technological services for our client not only product proposal.
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