We take courage from our service, fortune from our customers’ satisfaction, combining it by our passion, professionalism and sincerity, thus showing that with confidence in our staff - with the unstinting support from our customers - we will inevitably grow stronger. 

We all inhabit this small planet, we all breathe the same air, we all cherish our children's futures, we all have common interests and responsibilities in improving the condition of our living environment, therefore we are all bound for harnessing the sun's clean and inexhaustible energy to enable our people to live the good life.

So let us from this moment begin our work so that in the future men will look back and say: it was then, after a long and hard path, those men converted the exploits of their genius to the wonderful life of their people.

This is the goal that we are striving toward.


3 Simple Installation

Electronic and Electrical Materials

Rooted in leading technology, driven by economic globalization, and united by good faith, Koyu Industrial step forward to answer our customers’ requirements.

Benefits of Solar


Lifetime of mercury lights is approx.10,000 hours, in comparison, Dream LEDs are rated to last 50,000-60,000 hours, over five to six times as long as mercury lights.

Our Product Line-up

Renewable Energy

As the world contends with a burgeoning demand for electricity, surging fuel costs, and greenhouse gas emissions’ concerns, renewable energy resources such as solar power are playing a more central role in the search for energy solutions.



Koyu Industrial is serving people heart and soul by providing energy, enthusiasm and expertise. Koyu Industrial has contributed huge power so businesses can build and grow their operations and consumers can realize their wonderful futures.


  • [2016/04/01] Yuji Nakazawa set up our Akihabara Office