興亜通商 List of Products and Services

This catalog is a comprehensive introduction to solid wood materials handled by Koa Tsusho Co., Ltd., which is engaged in the import and sale of wooden building materials. It features various types of "flooring," including 15mm and 12mm thick, thick veneer and composite, design, antique, floor heating compatible, one-piece, herringbone, direct adhesive, and soundproof options, as well as "paneling" that can be used in conjunction with flooring to create a luxurious and highly designed space. [Contents] ■ Flooring ■ Paneling ■ Interior materials ■ Maintenance and adhesives ■ Decking materials *For more details, please download the PDF or contact us.

• Solid wood flooring/indoor
• Flooring materials compatible with underfloor heating
• Ceiling panels and decorative panels

In Japan, it was introduced during the Asuka period and began to be planted in various regions. It excels in humidity control and air purification, and also has insulation and heat retention effects, creating a comfortable indoor environment throughout the four seasons.

• Veneer laminate

It is also known as European red pine or redwood. It is a popular tree species that has been loved for a long time at a reasonable price range. Its warm texture makes you want to lie down on it.

• Solid wood flooring/indoor

This is the wood of a walnut family tree that grows in East Asia. The grain is very similar to black walnut, but the color tone is grayish and has a modest impression. With an air-dried specific gravity of 0.53, it is relatively light, and among hardwoods, it has many internal cell cavities, giving it a warm and pleasant feel to the touch.

• Solid wood flooring/indoor

When it comes to chestnuts, the image that first comes to mind is that of autumn flavors, but they are also excellent as timber. Due to their strength and superior moisture resistance, they are widely used in the main materials of the gassho-zukuri houses in Shirakawa-go, which is designated as a World Heritage site.

• Solid wood flooring/indoor

It is a broadleaf tree from the Betulaceae family produced in Yunnan Province, China. It is called "Southwest Cherry" because its grain and color are similar to that of Japanese cherry trees. We have prepared a premium option with a soft appearance that gives a formal impression, as well as a nature option featuring knots and sapwood in the scenery.

• Solid wood flooring/indoor

In Japan, it has long been used for housing pillars and is one of the familiar types of wood. Among them, the Nature Grade uses Obi cedar, which grows in Nichinan City, Miyazaki Prefecture. Obi cedar has a lot of red tones, contains oil, and is water-resistant, which made it valuable as shipbuilding material during the Edo period. Because it is soft, it feels warm like tatami mats, despite being wood.

• Solid wood flooring/indoor

It is a coniferous tree of the cypress family, genus Cryptomeria, that grows in Sichuan Province, China. In addition to its aesthetic value, it has humidity-regulating functions and plays a role in adjusting indoor temperature and humidity. Compared to Japanese cedar, it has less color variation between the sapwood and heartwood, and its appearance is bright and lively.

• Solid wood flooring/indoor

One of the flowers classified in the Acacia genus is a variety called Monika. While making the most of its unique wood grain, we offer a premium that has a certain elegance, along with nature that stands out with white sapwood and knots, showcasing its individuality.

• Solid wood flooring/indoor

The aging process and antique wood-style painting have recreated the antique feel that has been used for decades. The blue stains, discoloration from oils and fats, and darkening around the knots convey a sense of aging.

• Solid wood flooring/indoor

It is wood that contains a high amount of oil and has excellent dimensional stability, water resistance, and moisture resistance.

• Solid wood flooring/indoor

By splitting the bamboo in half and pressing it, we preserved the unique nodes of the bamboo. The antique-style atmosphere created by the painting and processing of the wide bamboo provides a space unlike any other.

• Solid wood flooring/indoor

Made from 100% natural materials and produced domestically, the quality is also excellent. In the long term, it is very economical, with performance almost on par with air purifiers. Lime plaster, which has been used for the white walls of castles and storehouses since ancient times, is made by burning limestone and shells to create a powder, then mixing it with water, hemp fibers, and seaweed glue to knead it into a paste. It has various effects that "protect life," such as temperature and humidity control, deodorization, antibacterial properties, fire resistance, and stain resistance.

• Plaster wall

The color mix with a material feel and a well-balanced composition creates an elegant and delicate atmosphere. The 8mm thick product can be easily installed not only on walls but also on ceilings. The processing shape has a clean impression with a flush finish.

• Veneer laminate

We further processed the wild-grade oak with saw cutting.

• Solid wood flooring/indoor
• Solid wood flooring/outdoor

In addition to the oak shown in the photo, there are 12 other types of wood available: Japanese Zelkova, Black Cherry, Black Walnut, Mandolin Wood, Rock Fir, Indonesian Teak, Karri, Indonesian Karri, Pinkado, Thermo Ash, and Vintage (reclaimed wood). We also offer French herringbone to create an even more luxurious feel!

• Solid wood flooring/indoor

It features a color tone not found in other woods, is hard, strong, has minimal warping, and its moderately heavy nature stands out for its balance. We offer a premium that exudes elegance and a nature option boldly adorned with knots.

• Solid wood flooring/indoor

Oak wood (Nara) "Uni 15mm thick" is a flooring material that is synonymous with solid flooring. It combines popularity and versatility, using Nara as the raw material, which is commonly used in many types of veneer for furniture and fittings. We offer a wide variety, so please choose according to your scene. 【Features】 ■ A synonym for solid flooring ■ Made with popular and versatile Nara ■ Available in multiple variations

• Solid wood flooring/indoor