Last Updated： Aggregation Period:May 27, 2026～Jun 23, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:May 27, 2026～Jun 23, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:May 27, 2026～Jun 23, 2026
This ranking is based on the number of page views on our site.
31～60 item / All 521 items
Okawa Trading's commitment to new construction and renovation.
Please enjoy the carefully selected natural materials, meticulous attention to detail, and the abundant standard features.
Symbiosis with the environment
The concept of "symbiosis with the environment," which emphasizes a commitment to the environment and health as a lifelong home, is the foundation of our approach to building houses.
お客様に安全と安心を届けたい
石原工務店の新築住宅は、お客様と一緒に造られています。 愛する家族と過ごす家だから、私達もお客様の生活スタイル を考えながら一生懸命家造りをしています。
We offer a range of "Yasuragi Wood" series products made from liquid glass-treated wood, focusing primarily on exterior items.
Recently, the use of wood outdoors has been increasing, and I believe there are growing requests such as "I want to use wooden furniture outdoors." In such cases, the procurement of wood involves lumber yards, processing is done at processing shops (there are few lumber yards that include molders), painting is handled by painting shops (there is an increasing demand for liquid glass and high-durability coatings), and installation is done by construction companies. Arranging transportation and other logistics can be quite cumbersome, and when it comes to estimates, you have to request them individually from each party... In such situations, "Sankyo Eiken" allows you to consolidate everything from wood procurement to processing, painting, installation, and transportation. Of course, individual estimates can also be provided. <If everything can be done in-house> In that case, you can procure liquid glass paint from "Sankyo Eiken," which is also a manufacturer of wood-specific liquid glass paint.
Non-combustible and quasi-non-combustible wood "Yasuragi Non-combustible"
Yasuragi non-combustible wood is a non-combustible wood material that meets the latest certification standards. - The latest non-combustible wood technology combined with high-durability coating prevents white bloom and leaching. - It is compatible with the Xenon tester for 3000 hours (coloring), suitable for outdoor use, prevents color fading due to UV rays, and maintains the beautiful wood grain as if it were new. - The high-durability hybrid liquid glass coating complies with food sanitation laws, school environmental sanitation standards, and is safe with F☆☆☆☆ (for indoor use only).
Manufacturing products that meet all customer requests (green materials and KD materials)
Manufacturing products in accordance with quality assurance laws and performance labeling (drying → molding → grading). Collaboration with the Hokushin Regional Timber Processing Cooperative (WEC) (pre-cut processing) → creation of structural check sheets and structural calculation documents from pre-cut processing drawings.
Completely non-toxic wood that does not use any chemicals! A natural new material with excellent insect resistance and shape stability.
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, which is an innovative wood material that does not use any chemicals due to the revolutionary effects of nitrogen heating treatment. It is an environmentally friendly, non-polluting wood that possesses excellent durability, water resistance, thermal insulation, anti-decay, anti-insect, and shape stability characteristics. With the elegance and dignity of natural buried wood, it is a new natural material that allows for personalized expression.
Estec Wood Construction Case Studies (Minato Park Shibaura) Featuring Construction Case Properties
The "Estec Wood Construction Case Study Collection (Minato Park Shibaura)" is a catalog featuring construction examples of "Minato Park Shibaura," a property that uses "Estec Wood," an environmentally friendly, non-polluting wood that requires no chemical treatment due to its revolutionary effects from nitrogen heat treatment. "Estec Wood" possesses excellent durability, water resistance, thermal insulation, anti-corrosion, insect resistance, and dimensional stability, and it is a new natural material that exudes elegance and dignity similar to natural buried wood, allowing for personalized expressions. 【Property Overview】 - Building Name: Minato Park Shibaura - Scale: 8 stories above ground, 1 basement level, height 54.9m, total floor area 50,724.9m² - Wood Used: Certified under the Minato Model Carbon Dioxide Fixation Certification System → Cedar (from Nichinan City, Miyazaki Prefecture, and Miyakonojo City, Miyazaki Prefecture) → Hinoki (from Higashishirakawa Village, Gifu Prefecture) - Amount of Estec Wood Used: 138m³ (out of a total wood usage of 470m³) For more details, please contact us or download the catalog.
A collection of construction case studies that utilize the excellent features of engineered wood materials from raw material to finished product.
The "Collection of Construction Examples for Medium to Large Scale Wooden Structures" features numerous construction examples from Emata Tada Lumber Co., Ltd., which engages in the import, export, processing, and sales of various types of wood materials, including logs, lumber products, plywood, and other building materials. It includes construction examples such as "Mogi Municipal Mogi Junior High School," which received the Minister of Agriculture, Forestry and Fisheries Award for Excellent Wooden Facilities in 2009, and "KEEP International Research Exchange Center," which won the Encouragement Award at the Yamanashi Prefecture Architectural Culture Awards, along with many photographs. [Featured Construction Projects] ■ Shizuoka Prefecture Kusanagi Sports Hall ■ National Museum of Modern Architectural Materials ■ Asakusa Culture and Tourism Center ■ Tokiwa Expressway Moriya SA (upbound and downbound) *This catalog is a digest version. For the full version, please contact us through the inquiry form.
![Large-scale Wooden Construction [Construction Examples] National Museum of Modern Architecture](https://image.www.ipros.com/public/product/image/955/2000311505/IPROS41032135878633059490.jpeg?w=280&h=280)
We offer proposals for the use of wood in medium to large-scale wooden buildings, supporting wood utilization through procurement, processing, and construction!
Our company, a coordinator for wood utilization, offers proposals for the use of wood in all areas such as structure, interior, and exterior to designers of wooden buildings. Additionally, we provide comprehensive support for wood utilization in all aspects, including procurement, processing, and construction, to general contractors. We would like to introduce the case of the "National Museum of Modern Architecture." 【Project Overview】 ■ Location: 4-6-5 Yushima, Bunkyo-ku, Tokyo ■ Construction: February 2013 ■ Total Floor Area: 1,162 m² ■ Construction Details: Wall louver work (Spruce [fire-retardant treated material], MDF) *For more details, please download the PDF or feel free to contact us.
![Large-scale wooden construction [Construction example] Ibaraki Prefecture, Ishioka City Hall](https://image.www.ipros.com/public/product/image/852/2000619634/IPROS13990507888796677555.jpeg?w=280&h=280)
We offer proposals for the use of wood in medium to large-scale wooden buildings, supporting wood utilization through material procurement, processing, and construction!
Our company, as a coordinator for wood utilization, offers proposals for the use of wood in all areas, including structure, interior, and exterior, to designers of wooden buildings and other structures. Additionally, we provide comprehensive support for wood utilization in all aspects, such as material procurement, processing, and construction, to general contractors. We would like to introduce a case study of the "Ibaraki Prefecture Ishioka City Hall." 【Property Overview】 ■ Location: 1-1 Ishioka, Ishioka City, Ibaraki Prefecture ■ Completion: December 2018 ■ Construction Area: Structural woodworking (cedar lumber)
![Large-scale wooden construction [Construction case] Hitachino Ushiku Junior High School, Ushiku City, Ibaraki Prefecture](https://image.www.ipros.com/public/product/image/188/2000619642/IPROS48495858155759200353.jpeg?w=280&h=280)
We offer proposals for the use of wood in medium to large-scale wooden buildings and support wood utilization through procurement, processing, and construction!
Our company, a coordinator for wood utilization, offers proposals for the use of wood in all areas, including structure, interior, and exterior, to designers of wooden buildings and similar projects. Additionally, we provide comprehensive support for wood utilization in all aspects, including material procurement, processing, and construction, to general contractors. We would like to introduce a case study of "Hitachino Ushiku Junior High School." 【Project Overview】 ■ Location: 1341-1 Higashikazahana-cho, Ushiku City, Ibaraki Prefecture ■ Completion: March 2020 ■ Construction Area: Structural woodworking (cedar lumber)
![Large-scale wooden construction [Construction Case] Hirozawa Art Museum The Hirosawa City](https://image.www.ipros.com/public/product/image/e84/2000619651/IPROS93189021666644233040.jpeg?w=280&h=280)
We offer proposals for the use of wood in large-scale wooden buildings and support wood utilization through procurement, processing, and construction of materials!
Our company, a coordinator for wood utilization, offers proposals for the use of wood in all areas, including structure, interior, and exterior, to designers of wooden buildings and similar projects. Additionally, we provide comprehensive support for wood utilization in all aspects, including material procurement, processing, and construction, to general contractors. We would like to introduce the case of the "Hirosawa Museum." 【Project Overview】 ■Location: The Hirosawa City, Chikusei City, Ibaraki Prefecture ■Completion: December 2020 ■Construction Area: Structural woodwork (Laminated Douglas fir)
![Large-scale wooden construction [Construction Case] Isohara Junior High School, Kitabira City](https://image.www.ipros.com/public/product/image/d6b/2000622168/IPROS84507302420159555525.jpeg?w=280&h=280)
We offer proposals for the use of wood in medium to large-scale wooden buildings and support wood utilization through procurement, processing, and construction of materials!
Our company, a coordinator for wood utilization, offers proposals for the use of wood in all areas, including structure, interior, and exterior, to designers of wooden buildings and similar projects. Additionally, we provide comprehensive support for wood utilization in all aspects, such as material procurement, processing, and construction, to the main contractors. We would like to introduce a case study from Isohara Junior High School in Kitaibaraki City. 【Project Overview】 ■ Location: Within the area of Toyoda, Isohara Town, Kitaibaraki City ■ Completion: June 2021 ■ Construction Areas: Structural woodworking (cedar lumber), interior work
Completely non-polluting wood that does not use any chemicals! A natural new material with excellent anti-corrosion, anti-termite, and dimensional stability properties.
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, which is a revolutionary wood material that does not use any chemicals due to its nitrogen-pressurized heat treatment. It is an environmentally friendly, non-polluting wood that possesses excellent properties such as decay resistance, water resistance, thermal insulation, anti-corrosion, anti-termite, and dimensional stability. With the elegance and style of natural buried wood, it is a new natural material that allows for personalized expression.
Vertical integration of material procurement, processing, and distribution into one! A pre-cut business model that pursues rationalization.
A comfortable living environment requires the safety of the home, the reassurance of materials, and a trust in the builders who ensure these aspects. The "Wood Material Complex" business of the Emata Group is a pre-cut business model that vertically integrates the functions of material procurement, processing, and distribution to pursue rationalization. Please contact us if you have any inquiries. *For more details, please refer to the PDF materials or feel free to contact us.
Achieves excellent durability, water resistance, and dimensional stability without the use of chemicals. Extensive track record in large-scale complex facilities and public facilities.
"Estec Wood" is a modified wood that enhances decay resistance by decomposing perishable components through nitrogen pressurized heating treatment without using any chemicals. It excels in water resistance, insulation, anti-corrosion and anti-termite performance, and dimensional stability, making it suitable for long-term outdoor and wet area use while still being natural wood. There is no volatilization of harmful substances or generation of resin and tannins, allowing for safe use. It has a wealth of construction achievements in complex facilities, museums, schools, and residential buildings. 【Features】 ■ Over 30 years of numerous sales achievements ■ Deep color reminiscent of buried wood ■ Uniform color and properties regardless of where it is cut, making it easy to process ■ The effectiveness of wood protection coatings lasts for a long time, delaying fading ■ Anti-termite performance meets the standard values based on JIS standards with 220℃ treatment * In addition to product catalogs with performance test data, we are also offering case studies in residential and non-residential fields. You can view them via "PDF Download." Please feel free to contact us with any inquiries.
![Large-scale wooden construction [Construction Case] Hachinohe Urban Plaza "Machiniwa"](https://image.www.ipros.com/public/product/image/d30/2000627812/IPROS66520297556393642382.jpeg?w=280&h=280)
We offer proposals for the use of wood in large-scale wooden buildings and support wood utilization through procurement, processing, and construction of materials!
Our company, a coordinator for wood utilization, offers proposals for the use of wood in all areas, including structure, interior, and exterior, to designers of wooden buildings and similar projects. Additionally, we provide comprehensive support for wood utilization in all aspects, including material procurement, processing, and construction, to general contractors. We would like to introduce a case study of the "Machiniwa" plaza in Hachinohe City, Aomori Prefecture. 【Project Overview】 ■ Location: 21-1 Mikatacho, Hachinohe City, Aomori Prefecture ■ Completion: July 2018 ■ Construction Area: Woodwork (louver work)
Completely non-toxic wood that does not use any chemicals! A new natural material with excellent anti-corrosion, anti-termite, and dimensional stability properties.
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, which is a revolutionary wood material that does not use any chemicals due to its nitrogen pressurized heat treatment. It is an environmentally friendly, non-polluting wood that excels in durability, water resistance, thermal insulation, anti-decay, anti-termite properties, and dimensional stability. With the elegance and dignity of natural buried wood, it is a new natural material that allows for personalized expressions.
Completely non-toxic wood that does not use any chemicals! A natural new material with excellent insect resistance and shape stability.
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, which is a revolutionary wood material that does not use any chemicals due to its nitrogen pressurized heat treatment. It is an environmentally friendly, non-polluting wood that excels in durability, water resistance, thermal insulation, anti-decay, anti-termite properties, and dimensional stability. With the elegance and dignity of natural buried wood, it is a new natural material that allows for personalized expression.
![[Estec Wood Case] Nagahama City Hall New Building](https://image.www.ipros.com/public/product/image/4eb/2000629105/IPROS19429332313119200128.jpeg?w=280&h=280)
Using cedar wood from Shiga Prefecture. By installing Estec Wood louvers, the government building has become a place where warmth and familiarity can be felt! Case study collection is currently being distributed.
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, which is a revolutionary wood material that does not use any chemicals due to its nitrogen-pressurized heat treatment, resulting in low environmental impact and being non-polluting. It possesses excellent properties such as decay resistance, water resistance, thermal insulation, anti-corrosion, termite resistance, and dimensional stability, while also showcasing the elegance and dignity of natural buried wood, making it a new natural material that can be tailored to individual preferences. - Nagahama City Hall New Building The new building was reconstructed with the theme of "simple yet functional, a hall that conveys warmth and familiarity!" By installing S-TECH WOOD louvers, the building has become warm and inviting. It uses cedar wood sourced from Shiga Prefecture and was installed approximately eight years ago. *We are currently offering a collection of case studies. Please check the PDF download below. Feel free to contact us!
Completely non-toxic wood that does not use any chemicals! A natural new material with excellent anti-corrosion, anti-termite, and dimensional stability properties.
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, which is an environmentally friendly, non-polluting wood that does not use any chemicals, thanks to its revolutionary effects achieved through nitrogen pressurized heat treatment. It possesses excellent properties such as decay resistance, water resistance, thermal insulation, anti-corrosion, anti-termite, and dimensional stability, while also exuding the elegance and dignity of natural buried wood, making it a new natural material that allows for personalized expression. - Yachiyo Bank Training Center A fence made of S-TECH WOOD, featuring a design that incorporates three-dimensional movement by arranging pieces of varying thicknesses and widths. It serves not only as a privacy screen but also as an accent along the street. It was installed about seven years ago.
The resin is removed by heating, and there is no worry about staining the surroundings due to the outflow of sap! Introducing a new natural material that excels in preservation, termite resistance, and shape stability.
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, a revolutionary material that uses no chemicals and has minimal environmental impact due to nitrogen-pressurized heat treatment. It possesses excellent properties such as decay resistance, water resistance, thermal insulation, anti-corrosion, termite resistance, and dimensional stability, all while embodying the elegance and dignity of natural buried wood, making it a new natural material that allows for personalized expression. - Ainu Museum This is Japan's northernmost national museum, established to respect the dignity of the Ainu, the indigenous people of Japan, and to gain a correct understanding and recognition of Ainu history and culture both domestically and internationally, as well as to contribute to the creation and development of new Ainu culture. Surrounding this newest national museum, located by Lake Poroto, are three widths of S-TECH WOOD. After visiting the museum, why not take a walk around the building as well? *We are currently offering a collection of case studies. Please feel free to download the PDF below.
"Using ash for exterior walls" Non-toxic wood that does not use any chemicals! A natural new material with excellent properties for preservation, termite resistance, and dimensional stability!
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, a revolutionary material that uses nitrogen pressurized heat treatment, allowing it to be completely free of chemical agents and environmentally friendly. It possesses excellent properties such as decay resistance, water resistance, thermal insulation, anti-corrosion, anti-termite, and dimensional stability, while also embodying the elegance and dignity of natural buried wood, making it a new natural material that can be tailored to individual preferences. - Onward Kashiyama Daikanyama This building features a café, gallery, apparel, and restaurant/bar across six floors, including a basement and five above ground, aiming to create a space that stimulates the five senses and blends into the surrounding area as a place of relaxation. By incorporating abundant natural light and materials that evoke a sense of nature, along with natural wood (S-TECH ASH) as one of the components alongside stone and iron, the overall design intention of the building (a newly formed natural hill) is expressed. It is also used in drama filming locations! *For more details, please contact us or refer to the catalog.
Using domestically produced sleepers, this is a non-polluting wood that does not use any chemicals! A natural new material that excels in preservation, termite resistance, and shape stability!
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, a revolutionary material that uses nitrogen pressurized heating treatment, allowing it to be completely free of chemical agents and environmentally friendly. It possesses excellent properties such as decay resistance, water resistance, thermal insulation, anti-corrosion, termite resistance, and dimensional stability, all while exuding the elegance and dignity of natural buried wood. It is a new natural material that can be tailored to individual preferences. - Ebisu Garden Place The well-known landmark of Ebisu, "Ebisu Garden Place." A new garden has been created next to the Sapporo Beer headquarters. In this beautiful garden, S-TECH WOOD garden sleepers are used along the pathways. The shadows of the leaves let in sunlight and are projected onto the sleepers, changing their appearance throughout the day. *For more details, please contact us or refer to the catalog.
![Abundant use of Shimane Prefecture timber [Estec Wood Case: Izumo Taisha]](https://image.www.ipros.com/public/product/image/b75/2000633869/IPROS49280933256436468412.jpeg?w=280&h=280)
It has the elegance and dignity of natural buried wood, characterized by deep natural colors and uniformity!
S-TECH WOOD is an abbreviation for Sendai Technologies Wood, a revolutionary material that, through nitrogen-pressurized heat treatment, achieves remarkable effects without the use of any chemicals. It is an environmentally friendly, non-polluting wood that excels in durability, water resistance, thermal insulation, anti-decay, anti-termite properties, and dimensional stability. With the elegance and dignity of natural buried wood, it is a new natural material that allows for personalized expression. - Izumo Taisha S-TECH WOOD is also used in Izumo Taisha, renowned as a deity of matchmaking and fortune. The rough fence surrounding Izumo Taisha matches perfectly with its dignified atmosphere. *We are currently offering a collection of case studies! You can check it out by downloading the PDF below.
![Large-scale wooden construction [Construction case] Ariake Tennis Forest Indoor Court](https://image.www.ipros.com/public/product/image/322/2000634243/IPROS73072540421758337618.jpeg?w=280&h=280)
We offer proposals for the use of wood in medium to large-scale wooden buildings, and we support wood utilization through procurement, processing, and construction!
Our company, a coordinator for wood utilization, offers proposals for the use of wood in all areas, including structure, interior, and exterior, to designers of wooden buildings and similar projects. Additionally, we provide comprehensive support for wood utilization in all aspects, such as material procurement, processing, and construction, to general contractors. We would like to introduce a case study of the Ariake Tennis Forest Indoor Court in Tokyo. "SGEC/PEFC Project Certification" has been obtained, featuring wooden roof trusses. [Project Overview] ■ Location: 2-2-22 Ariake, Koto-ku, Tokyo ■ Completion: March 2020 ■ Construction Area: Wooden structure work (wooden roof trusses)
![Large-scale wooden construction [Construction Case] Shizuoka Prefectural Western Special Support School](https://image.www.ipros.com/public/product/image/7c7/2000634252/IPROS37780662558654668173.jpeg?w=280&h=280)
We offer proposals for the use of wood in medium to large-scale wooden buildings, and we support wood utilization through procurement, processing, and construction!
Our company, as a coordinator for wood utilization, offers proposals for the use of wood in all areas, including structure, interior, and exterior, to designers of wooden buildings and similar projects. Additionally, we provide comprehensive support for wood utilization in all aspects, such as material procurement, processing, and construction, to general contractors. We would like to introduce a case study from the Shizuoka Prefectural Western Special Support School in Hamamatsu City, Shizuoka Prefecture. This is an indoor gymnasium that makes abundant use of locally sourced timber. 【Project Overview】 ■ Location: 597-1 Nezai-cho, Kita-ku, Hamamatsu City, Shizuoka Prefecture ■ Completion: February 2017 ■ Construction Area: Carpentry Work
![[Free] Collection of case studies on wooden construction, non-combustible plywood sheets, heat-treated wood, and high melamine.](https://image.www.ipros.com/public/product/image/53a/2000729053/IPROS6429612937401957900.jpeg?w=280&h=280)
The Ritz-Carlton and Mount Fuji Shizuoka Airport have also adopted it! Why is wood so versatile? We propose "wood utilization"【*Free collection of case studies as a gift】.
Ema Tada Lumber provides comprehensive support from the sale of construction timber and materials to construction. 【Do you have any of these concerns?】 ◆ I want to express the beauty of wood accurately and effectively. ◆ I want to consult with a wood expert about designs and structures that take wood characteristics into account. ◆ I want to utilize wood in buildings as part of my SDGs and ESG management, but I don't know who to consult. ◆ I want to know the latest information about wooden buildings. Please consult with "Ema Tada Lumber," a timber specialty trading company celebrating its 100th anniversary since its founding in 1923, for the woodification of structures, exteriors, and interiors. 【Examples of Projects (Partial)】 Mount Fuji Shizuoka Airport (Non-combustible regional wood veneer sheets) Large wooden gymnasiums and arenas (Wooden architecture) Ritz-Carlton Nikko (Estec ceiling) Woodification examples using veneer and high melamine *We are currently offering a free, extensive collection of construction case studies with plenty of photos! (Includes a sample request form) Please download the PDF to obtain it.
