Our Divisions and Locations

Wood provides us with a sense of tranquility and, with its excellent insulation and humidity control properties, enhances the living environment performance of wooden houses. On the other hand, its performance and strength can deteriorate due to decay and termite damage.
Our Wood Preservation Sales Department utilizes advanced wood preservation technologies to prevent decay  and termite damage, providing a wide range of customers with safe, secure, and high-value-added wood. Our unique "dry pressure treatment technology," which uses no water, enables us to treat pre-cut lumber, engineered wood such as laminated veneer lumber (LVL), cross-laminated timber (CLT), and plywood, as well as dimension lumber, with excellent dimensional accuracy. Widely used in residential structural members, moldings, non-residential structures, landscaping materials, and playground equipment, we also accept custom injection treatment to meet the needs of our customers.
 

While there are various wood preservation methods such as coating, spraying, dipping, and hot-cold baths, pressure impregnation is the most reliable method for long-term use. Although most pressure impregnation methods use water-soluble chemicals, wood undergoes a dimensional change of approximately 5-10% when it absorbs water. Therefore, many people, especially those familiar with wood, believe that pressure impregnation cannot be applied to engineered wood, particularly CLT and large-section members.
Our Sales Promotion Department is committed to expanding the use of durable wood through collaborations by introducing our unique "dry pressure treatment technology," which does not use any water and can treat large-section members such as laminated veneer lumber (LVL) and cross-laminated timber (CLT) to a wider audience.
 

We are proactively working to solve the environmental issues through our sales activities of wood preservation technologies.

Wood is significant material that could fix carbon and contribute to conserve the global environment. Wood could reduce carbon dioxide emissions by utilizing it for a long period. Our department works to ensure that wood could be utilized for a long period, through the sales activities of preservatives for our unique "dry-treatment," as well as chemicals that give wood functionality, bait wood for termite control, and deterioration diagnosis of the wooden buildings.

The pressure treatment technologies which we have treated are compatible among dry, wet, and oil methods as a solvent, and are available to procure throughout Japan. 

We have 4 factories and totally 9 production equipment for preserved wood located in Tohoku, Ibaraki, Kansai, and Okayama, enabling us to fulfill requests from all over Japan.
Our primary Tohoku Factory is equipped with dry, wet, and oil pressure treatment equipment, allowing us to cater to a wide range of needs. The Ibaraki Factory houses a large-scale dry pressure treatment equipment, capable of treating residential and exterior building materials, as well as large-scale non-residential projects such as large-section members and CLT. Our Kansai and Okayama Factories are equipped with dry pressure treatment equipment and can handle residential, exterior, and non-residential projects.
 

Wood has been used in our living environments for a long time and remains an indispensable resource in our daily lives. Making effective use of wood in various situations is also crucial for global environmental conservation. However, wood has drawbacks such as rotting, being eaten by termites, and being flammable. Our Development Department is engaged in research and development to overcome these drawbacks through chemical methods and maximize the potential of wood.
In particular, we are striving to further enhance wood preservation technologies by developing our unique "dry pressure treatment technology" and new wood preservatives. Our goal is to effectively utilize limited forest resources and ensure the long-term usefulness of wood.
(Go to Features of dry pressure treatment page→Features of dry pressure treatment)

 

The effective utilization of wood resources is a crucial endeavor not only in Japan but also overseas. In particular, the spread of environmentally friendly wooden buildings in Asia, where termites are active due to the warm and humid climate, is expected to contribute to sustainable growth. In collaboration with domestic businesses involved in wood preservation treatment for residential and non-residential purposes, our Innovation Department is actively working to develop new markets in overseas and DX(Digital Transformation)/GX(Green Transformation) field.