About Us

General Trading

Building Material Department

About the Department

We handle equipment and materials in general, including building materials, exterior products, ceramic tiles, stone, ceramic raw materials, and large mining machines. We also handle environmental commodities. The direct current supply system, which enables maximum utilization of renewable energy, is an increasingly important environmental technology toward the realization of a low-carbon society. In addition, we are engaged in not only domestic sales of domestic and imported products, but also the export of Japanese quality products and global business including the triangular trade of ceramic raw materials and others.

Product / Merchandise Lineup
Energy-related products
Direct current supply system
Building material
Ceramic tiles, natural stones, wooden products, glass building materials, exterior products, steels, ready-mixed concrete, aluminum materials, building materials, etc.

【Kowa Collection】
The Kowa Collection presents selected ceramic interior/exterior decoration materials and glass building materials for overseas markets under the concept of "Decorative Modern."

Kowa Collection Web Site

EUROSHOP at Germany

Others
Raw materials for Ceramics, Raw materials for tires, Large dump truck, construction-equipment, etc.

  • Raw materials for tires (Insoluble sulfur)

  • Pigment for ceramics

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Direct current supply system – Approach to the realization of a low-carbon society –

As part of an approach to the realization of a low-carbon society, we are selling a direct current supply system, which is a next-generation collaborative power generation and accumulation system that enables maximum utilization of renewable energy such as sunlight and wind power, and therefore contributes to energy saving. The direct current supply system does not convert renewable energy (direct current), such as sunlight and wind power, or electricity (direct current) from storage devices into alternative current, but directly supplies direct current to LED lights and others. This system can also make up for the deficiency of renewable energy with commercial (alternative current) electricity if necessary.

In general, renewable energy such as solar energy needs to be converted into alternative current by a power conditioner. However, such conversion causes so-called "conversion loss" (considerable loss of energy due to conversion). The direct current supply system does not convert renewable energy into alternative current, but directly supplies direct current to LED lights and others, and thereby reduces conversion loss and drastically saves electricity expense.

Example of introduction of direct current supply system: A certain financial institution

・Time of introduction: February 2014
・Detail of introduction: A DC power supply LED system with a dimming function combining a storage battery and a solar power generation system
・Result of introduction:

Additionally, one of its great advantages is that it can efficiently use limited electricity, and therefore it can be used as an emergency power supply in case of a disaster.
Supply electricity whenever and wherever necessary without any loss.
We are aggressively striving for the realization of a low-carbon society through the direct current supply system.

Contact about Building Material Department