Bjay Technologies Co., Ltd.

Who we are

Message from the Managing Director

代表取締役 玉川 春男

We propose, plan and develop new materials, contributing to eco-society.

We are a foreign-financed trading company established in December 2017.

With the rapid progress of the new industrial revolution, we place clean energy, electric vehicles, new materials, and medical care as priority areas. We supply manufacturing equipment, raw materials and services. In particular, in the field of lithium-ion rechargeable batteries, we are providing support from the start-up to mass-production of a Chinese manufacturer, our partner company, aiming to be the world's No. 1 company.

We will continue to positively challenge our daily activities and contribute to a sustainable society so that we can contribute to the development of China and other Asian countries as well as Japan's economic growth in the future.

Managing Director
Haruo Tamagawa

Haruo Tamagawa

Company Profile


Company Name
Bjay Technologies Co., Ltd.
9th Floor, Kamiyacho Prime Place Bldg.
4-1-17 Toranomon, Minato-ku, Tokyo 105-0001, Japan
Managing Director, Haruo Tamagawa
December 2017
Yen90,000,000 (Capital Reserve Yen90,000,000)
(03) 6809-1140 (Main number)
Main Bank
Sumitomo Mitsui Banking Corporation. Aoyama Branch
Business Description
Sales and import / export of LIB part materials manufacturing equipment and part materials, Development support for new materials and others

Overseas Partner Company

Company Name
Shanghai Kener New Material Technology Co., Ltd.
Pudong New Area, Shanghai
June 2016
Chinese Yuan30Million (≒Yen500Million)
Business Description
Research and development of nanocomposite materials,
new energy related materials, seawater desalination, etc.

Management Policy of Bjay Technologies

We will clarify MISSION · VISION · VALUE and we will strive to realize it.


We propose, plan and develop new materials, contributing to eco-society


  • Promotion of technologies and products for realizing a sustainable society
  • Innovation creation through new material development
  • Social Contribution in the Advanced Medical Field


  • Development and sale of materials and manufacturing equipment concerning
    Li-ion rechargeable battery and next-generation battery
  • Promotion of seawater desalination project
  • Sale of advanced medical equipment


  • Compliance with laws and regulations
  • Concern about the environmental
  • Contribute to society
  • Be sincere with a sense of responsibility
  • Act promptly and proactively

Business Domain

Clean Energy & Ecology

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  • Smart City
  • Development and sales of energy storage systems
  • Development and sales of LIB materials
  • LIB re-use/re-cycle
  • Development and sales of LIB materials production equipment
  • Seawater Desalination Project

New Material

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  • Ceramics
  • Transparent polyimide
  • Thin type reverse osmosis membrane
  • Aluminum laminated film, Tab materials
  • Cellulose Nanofiber
  • High tensile strength electrolytic copper foil, Porous electrolytic copper foil


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  • Health Checkup Program for visitors
  • Sales of Advanced Medical Equipment