東京テクノ List of Products and Services

We would like to introduce a case study of underground obstacle removal conducted by our company. At a site in Honmoku, Yokohama, an existing PHC pile with a depth of 28m and a diameter of 600mm broke during extraction, leading to a request for underground obstacle removal from our company. Using our original tool "Kachi-Wakun," we performed the removal using a casing with a diameter of 1,000mm and the all-casing method with the SR-45 multi-drill excavator. 【Construction Overview】 ■ Project Name: Introduction of "Kachi-Wakun" and pile removal using the multi-drill method ■ Construction Date: September 27, 2023 ■ Location: Yokohama City, Kanagawa Prefecture *For more details, please refer to the related links or feel free to contact us.

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We would like to introduce a case study of the ground improvement work we conducted. In Midori Ward, Sagamihara City, we implemented our original T-column method (deep mixing method). This was carried out using a newly purchased 30t silo. Our company has many achievements with original construction equipment and unique methods. You can find more details about the case in the related links. 【Case Overview】 ■ Project Name: T-column Method (Deep Mixing Method) in Midori Ward, Sagamihara City ■ Construction Date: December 22, 2021 ■ Location: Midori Ward, Sagamihara City ■ Details: Φ1000 L=10.0m 173 pieces *For more information, please refer to the PDF materials or feel free to contact us.

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We would like to introduce a case study of the ground improvement work we conducted. In Machida City, Tokyo, we implemented our original T-column method (deep mixing method). The excavation length was 9.0 meters, with 120 construction locations, and a silo for the solidifying agent was installed for the work. We have provided images of this case study in the related links, so please take a look. 【Case Overview】 ■ Project Name: T-column Method (Deep Mixing Method) in Machida City, Tokyo ■ Construction Date: October 9, 2021 ■ Location: Machida City, Tokyo *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of the ground improvement work we conducted. In Midori Ward, Sagamihara City, Kanagawa Prefecture, we implemented our original T-column method (deep mixing method) using construction machine S-15. A total of 176 locations were completed successfully. 【Case Overview】 ■ Project Name: Sagamihara City T-column Method (Deep Mixing Method) ■ Construction Date: October 5, 2021 ■ Location: Midori Ward, Sagamihara City, Kanagawa Prefecture ■ Details: Five types of pile diameters, with a small diameter of Φ800mm and a large diameter of Φ1300mm. *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of the ground improvement work we conducted. In a factory located in Odawara City, Kanagawa Prefecture, we implemented our original deep mixing treatment method, the T-column method (Construction Technology Examination Certificate). We have provided images and details of this case in the related links, so please take a look. 【Case Overview】 ■ Project Name: T-Column Method in Odawara City, Kanagawa Prefecture ■ Construction Date: September 30, 2021 ■ Location: Odawara City, Kanagawa Prefecture *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of the ground improvement work carried out by our company. In Machida City, Tokyo, the columnar improvement work for the newly constructed Tokiwa Ground within the Obirin Gakuen Machida Campus has begun, utilizing the original method "T-Column Method," which has obtained technical review certification and is a deep mixing treatment method. This project involves columnar improvement work for the ground, special L-shaped retaining walls, and L-shaped retaining walls. 【Case Overview】 ■ Project Name: Ground Improvement Using Deep Mixing Treatment Method (T-Column Method) ■ Construction Date: September 3, 2020 ■ Location: Tokiwa-cho, Machida City, Tokyo ■ Details: Pile diameter Φ160, total of 170 piles *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of the ground improvement work we conducted. In Nihonbashi, Chuo Ward, Tokyo, we performed the T-column method (deep mixing method) using construction machine S-15. We have introduced this case with images in the related links, so please take a look. 【Case Overview】 ■ Project Name: T-column Method (Deep Mixing Method) in Nihonbashi, Chuo Ward, Tokyo ■ Construction Date: June 5, 2021 ■ Location: Nihonbashi, Chuo Ward, Tokyo *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of ground improvement work carried out by our company. In Atsugi City, Kanagawa Prefecture, we performed surface improvement work associated with the new construction of the Atsugi Fire Station South Mouri Branch. A mixing bucket was attached to a 0.7 backhoe, and we mixed 162 tons of solidifying material for an area of 893 m². 【Case Overview】 ■ Project Name: Surface Improvement in Atsugi City Using a Mixing Bucket ■ Construction Date: October 14, 2020 ■ Location: Nagase, Atsugi City, Kanagawa Prefecture *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of the ground improvement work we have conducted. We performed the construction of foundation piles for public works in Machida City using the full rotary all-casing method. We strive for efficient and smooth construction tailored to the site conditions with our unique innovations. 【Case Overview】 ■Project Name: Site-cast pile construction using the full rotary all-casing method in Machida City ■Construction Date: July 24, 2020 ■Location: Machida City, Tokyo *For more details, please refer to the PDF materials or feel free to contact us.

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We would like to introduce a case study of the ground improvement work conducted by our company. In a vast area in Tsukui, Sagamihara City, we performed columnar improvement work using our original deep mixing method and T-column method. Due to the construction involving 290 locations and an excavation depth of approximately 10 meters, we installed a 30-ton silo and plant for the solidifying agent. The solidifying agent was delivered daily, and the work was successfully completed. 【Case Overview】 ■ Project Name: T-Column New Construction and Renovation Work in Midori Ward, Sagamihara City ■ Construction Date: March 16, 2020 ■ Location: Chigira, Midori Ward, Sagamihara City *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of ground improvement work carried out by our company. At the site of a new warehouse construction in Chigasaki City, Kanagawa Prefecture, we implemented our original deep mixing method and T-column method. The improvement diameters varied widely, with the largest being Φ1400mm and the smallest Φ800mm, totaling five different sizes. We planned and executed the work meticulously to match the building's requirements. 【Case Overview】 ■Project Name: New Warehouse Construction T-Column Method ■Construction Date: September 30, 2019 ■Location: Chigasaki City, Kanagawa Prefecture *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of underground obstacle removal conducted by our company. In Taito Ward, Tokyo, we carried out the removal of underground obstacles using the MD250 with a caterpillar width of 2990mm and the SR-45 multi-drill excavator. For the removal of underground obstacles with a casing diameter of Φ1000, construction machines with a caterpillar width of 3000mm or less are specialized and are effective in narrow spaces. 【Case Overview】 ■Project Name: Underground Obstacle Removal at Kuramae Building, Taito Ward ■Construction Date: September 4, 2019 ■Location: Kuramae, Taito Ward, Tokyo *For more details, please refer to the PDF document or feel free to contact us.

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We would like to introduce a case study of underground obstacle removal conducted by our company. In Kojimachi, Chiyoda-ku, Tokyo, we carried out the removal of existing foundation piles on a site of approximately 56m2, which is extremely small. The machinery used was the SR-45, and the construction was performed using the multi-drill method. [Case Overview] ■ Project Name: Removal of Existing Foundation Piles on an Extremely Small Site of Approximately 56m2 ■ Construction Date: September 13, 2022 ■ Location: Kojimachi, Chiyoda-ku, Tokyo *For more details, please refer to the PDF document or feel free to contact us.

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On our company website, we introduce case studies of underground obstacle removal. This page features Part 8 of our series on removed underground obstacles. For more details, please refer to the related links. Our company has also developed original tools and has achieved many results in various field situations. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our company website, we introduce case studies of underground obstacle removal. This page features Part 7 of our series on removed underground obstacles. For more details, please refer to the related links. We have included images of actual underground obstacles, so please take a look. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our company website, we introduce case studies of underground obstacle removal. This page features Part 6 of our series on removed underground obstacles. For more details, please refer to the related links. Our company is capable of consistent in-house construction from ground surveys to ground improvement work. Please feel free to contact us if you have any requests. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our company website, we introduce case studies of underground obstacle removal. This page features Part 5 of the special on removed underground obstacles. For more details, please refer to the related links. For foundation work such as underground obstacle removal, ground improvement work, existing pile extraction work, site development piles, excavation support work, and installation/removal of construction platforms, please contact us. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our website, we introduce case studies of underground obstacle removal. This page features Part 4 of our special on removed underground obstacles. For more details, please refer to the related links. If underground obstacles suddenly arise, please contact us. 【Methods for Underground Obstacle Removal】 ■ Multi-drill method (equivalent to BG method) ■ All-casing method (equivalent to BG method) *For more details, please download the PDF from the related links or contact us.

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On our company website, we introduce case studies of underground obstacle removal. This page features Part 3 of our special on removed underground obstacles. For more details, please refer to the related links. For requests regarding foundation work, including underground obstacle removal, ground improvement work, existing pile extraction work, site preparation piles, excavation support work, and installation/removal of construction platforms, please feel free to contact us. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our company website, we introduce case studies of underground obstacle removal. This page features Part 2 of our special on removed underground obstacles. For more details, please refer to the related links. Please contact us for underground obstacle removal work. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our company website, we introduce case studies of underground obstacle removal. On this page, we feature underground obstacles that were removed using tools developed by our company. For more details, please check the related links. Additionally, we have included images of the removal status from January 2022, so please take a look. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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We would like to introduce a case of underground obstacle removal work conducted by our company as part of a public project. The work was carried out in Chigasaki City. An underground obstacle was encountered around 10 meters, making it impossible to proceed with the Aboron method, which led to our receiving the request and securing the order. Details of the case are provided in the related link, so please take a look. 【Case Overview】 ■ Project Name: SR45 Multi-Drill Method 25m Underground Obstacle Removal ■ Construction Date: October 28, 2021 ■ Location: Chigasaki City, Underground Obstacle Removal ■ Details: Φ800 GL-25m *For more information, please download the PDF from the related link or contact us.

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We would like to introduce a case study of underground obstacle removal conducted by our company. In Nihonbashi, Chuo-ku, Tokyo, where the Shinkansen runs nearby, we used the SR45 multi-drill to remove a site construction pile with a diameter of Φ1200 and a depth of GL-22m. The removal of the site construction pile in a narrow area was extremely challenging, but by utilizing our uniquely developed Kelly grab, 3D bucket, and lightweight power jack, we were able to achieve a smooth removal. 【Case Overview】 ■ Project Name: SR45 Multi-Drill Method - Underground Obstacle Removal ■ Construction Date: September 11, 2021 ■ Location: Hon-Ishicho, Nihonbashi, Chuo-ku, Tokyo ■ Details: Φ1200 GL-22m *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal conducted by our company. In Inagi City, Tokyo, we carried out underground obstacle removal work due to low overhead clearance. The removal work is being performed using the MD250. By changing the length of the leader, it becomes possible to carry out underground obstacle removal work even under such low power lines. 【Case Overview】 ■ Project Name: Inagi Enokido Underground Water Pipe Removal Project ■ Construction Date: August 17, 2021 ■ Location: Inagi City, Tokyo *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal that we conducted. The removal of existing piles was carried out using a Φ2500 full rotation machine on a vast site in Saiwaicho, Kanazawa Ward, Yokohama City. The removal of Φ400-600 PC piles, with a maximum depth of 39m, was conducted over approximately two months using a 150t crane. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Work using Φ2500 Full Rotation Machine ■ Construction Date: June 4, 2021 ■ Location: Kanagawa Prefecture, Yokohama City, Kanazawa Ward *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal that we conducted. In Nihonbashi, Chuo Ward, Tokyo, we received a request for the removal of underground obstacles located 10 cm from an adjacent wall. It was a site with limited space for wall construction, but we used the multi-purpose pile driving and extraction machine MD250 to remove old obstacles such as railway sleepers. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Project in a Limited Space, Nihonbashi, Chuo Ward, Tokyo ■ Construction Date: May 15, 2021 ■ Location: Nihonbashi, Chuo Ward, Tokyo *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal that we conducted. In a site adjacent to the Shuto Expressway in Chuo Ward, Tokyo, we removed a hard block of rubble that had been left under the old revetment. Using the multi-drill excavator SR-45, which has the capability to remove obstacles even in adjacent areas, we lifted the rubble using the multi-drill method. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Project in Chuo Ward, Tokyo ■ Construction Date: October 12, 2020 ■ Location: Nihonbashi Hamacho, Chuo Ward, Tokyo *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal conducted by our company. In Niiza City, Saitama Prefecture, we lowered the main machine, the SR-45 multi-drill, to the second basement level and performed the removal of the underground continuous wall in the underground space. Using our original special grab, we removed the soil cement of the continuous wall and the H-beams measuring 400×200 using the multi-drill method. Finally, we divided the site construction piles into four parts for removal. 【Case Overview】 ■ Project Name: Underground Continuous Wall Removal Project, Niiza City, Saitama Prefecture ■ Construction Date: August 11, 2020 ■ Location: Niiza City, Saitama Prefecture *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal that we conducted. For a construction request in Hamamatsu City, Shizuoka Prefecture, we used the multi-drill excavator SR-45 to remove 65 columnar improvement piles with a diameter of 1200 mm using the multi-drill method. We have provided images of this case in the related links, so please take a look. 【Case Overview】 ■ Project Name: Columnar Improvement Pile Removal Project, Hamamatsu City, Shizuoka Prefecture ■ Construction Date: June 19, 2020 ■ Location: Nishi Ward, Hamamatsu City, Shizuoka Prefecture *For more details, please download the PDF from the related links or contact us.

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We would like to introduce a case of underground obstacle removal that we conducted in Takanawa, Minato-ku, Tokyo. During the construction work using the Aboron method, we encountered an underground obstacle at a depth of 18 meters, which made it impossible to continue the work, leading to a request for removal from our company. Using the multi-drill excavator SR-45, we carried out the removal of the underground obstacle using the multi-drill method, and after the obstacle was removed, we also proceeded with the installation of the foundation piles for the tower crane, measuring 350×350H. 【Case Overview】 ■ Project Name: Underground Obstacle Removal & 30m Foundation Pile Installation in Minato-ku ■ Construction Date: March 11, 2020 ■ Location: Takanawa, Minato-ku, Tokyo *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal that we conducted. This was carried out at a new construction site in Inzai City, Chiba Prefecture. Using the SR-45 multi-drill rig, we removed a cement milk and H-steel underground continuous wall through the multi-drilling method. For more details about the case, please check the related link. 【Case Overview】 ■ Project Name: Underground Continuous Wall Removal at New Construction Site in Inzai City, Chiba Prefecture ■ Construction Date: February 8, 2020 ■ Location: Inzai City, Chiba Prefecture ■ Details: Core material H400×200, GL-16.0m *For more information, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal conducted by our company. In Jujo, Kita-ku, Tokyo, we performed underground obstacle removal work using the multi-drilling method inside an existing soundproof house with a ceiling height of 11.6m. We used the multi-drill excavator MD250 to carry out the removal at a low headroom. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Work inside Soundproof House ■ Construction Date: December 9, 2019 ■ Location: Jujo, Kita-ku, Tokyo *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case study of underground obstacle removal work conducted by our company. In Edogawa Ward, Tokyo, we successfully completed the removal of underground obstacles using the low headroom slide method, involving a φ1200, 48m section, with an overhead restriction of 5.8m. This method allows for the removal of underground obstacles both under beams and inside buildings. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Work (Low Headroom Slide Method) ■ Construction Date: March 29, 2022 ■ Location: Edogawa Ward, Tokyo *For more details, please download the PDF from the related link or contact us.

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On our company website, we introduce case studies of underground obstacle removal. This page features a special report on underground obstacles that were removed in March 2022. For more details, please refer to the related links. Our company is capable of cutting, removing, and backfilling underground obstacles using various methods suitable for the site. Please feel free to contact us if you have any requests. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our website, we introduce case studies of underground obstacle removal. This page features the second installment of our special on underground obstacles removed in March 2022. For more details, please check the related links. We have included images of actual underground obstacles, so please take a look. 【Methods for Underground Obstacle Removal】 ■ Multi-Drill Method (Equivalent to BG Method) ■ All-Casing Method (Equivalent to BG Method) *For more details, please download the PDF from the related links or contact us.

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On our company website, we introduce numerous case studies of underground obstacle removal. On this page, we present the sizes for low-headroom construction using the multi-drill method (equivalent to BG method) in drawings. Our company selects tools according to the situation and carries out the construction. Please feel free to contact us if you have any requests. 【Methods for Underground Obstacle Removal】 ■ Multi-drill method (equivalent to BG method) ■ All-casing method (equivalent to BG method) *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case of underground obstacle removal conducted by our company. In Atsugi City, Kanagawa Prefecture, we carried out underground obstacle removal work using a full-circle rotary all-casing method (equivalent to the BG method). While protecting the borehole walls, we removed various underground obstacles. We have introduced this case with images in the related links, so please take a look. 【Case Overview】 ■ Project Name: Full-Circle Rotary (BG Equivalent) Underground Obstacle Removal ■ Construction Date: April 2, 2022 ■ Location: Atsugi City, Kanagawa Prefecture ■ Details: φ1000 to φ1800, L=11 to 21m (68 pieces) *For more details, please download the PDF from the related links or contact us.

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Here is an introduction to a case study of underground obstacle removal conducted by our company. In Yokosuka City, Kanagawa Prefecture, we executed the work using the multi-drilling method (equivalent to BG method). We removed PHC piles that could not be extracted using the pull-out method. Upon receiving notice that extraction was impossible, we promptly began the work and successfully completed the project. 【Case Overview】 ■ Project Name: Multi-Drilling Method (Equivalent to BG Method) ■ Construction Date: May 12, 2022 ■ Location: Yokosuka City, Kanagawa Prefecture ■ Details: φ1000 GL-25m *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case study of underground obstacle removal conducted by our company. This project took place in Nakano Ward, Tokyo, using an underground obstacle removal method equivalent to the BG method. It features the SR-45 standard mast specification. Piles that could not be removed using the pull-out method were removed using the all-casing crushing method. We have provided images of this case study in the related links, so please take a look. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Method (Equivalent to BG Method) ■ Construction Date: May 19, 2022 ■ Location: Nakano Ward, Tokyo ■ Details: SR-45 standard mast specification, depth of 16m *For more details, please download the PDF from the related links or contact us.

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We would like to introduce a case study of underground obstacle removal conducted by our company. In Tokyo, we carried out construction using a multi-drill method equivalent to the BG method. We removed PHC piles and pine piles with a diameter of 1500 mm and a length of 22 m. We have provided images of this case study in the related links, so please take a look. 【Case Overview】 ■ Project Name: Multi-Drill Method Equivalent to BG Method ■ Construction Date: June 10, 2022 ■ Location: Tokyo ■ Details: Diameter 1500 mm, Length 22 m *For more details, please download the PDF from the related links or contact us.

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We would like to introduce a case study of underground obstacle removal work that our company has conducted. In Bunkyo Ward, Tokyo, we carried out underground obstacle removal work on a super-narrow site. Using the MD250, we worked in a challenging area with a site area of approximately 82m2. Thanks to our multi-drill and the technology and achievements we have cultivated so far, we were able to complete the work successfully. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Work on a Super-Narrow Site ■ Construction Date: June 28, 2022 ■ Location: Bunkyo Ward, Tokyo ■ Site Foundation Piles: Φ800, 13m, 6 pieces *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case where we removed underground obstacles from a pressure-resistant slab in Hachioji City, Tokyo, using the multi-drilling method (equivalent to the BG method). During the construction, we used the "SR-45 multifunctional drilling machine multi-drill" manufactured by the Italian company SoilMec. In the related links, we have introduced this case with images, so please take a look. 【Case Overview】 ■ Project Name: Underground Obstacle Removal Work for Pressure-Resistant Slab ■ Construction Date: July 20, 2022 ■ Location: Hachioji City, Tokyo *For more details, please download the PDF from the related links or contact us.

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We would like to introduce a case study of underground obstacle removal conducted by our company. In Kojimachi, Chiyoda Ward, Tokyo, we carried out the removal of existing foundation piles on a site of approximately 56m², which is extremely small. The machinery used was the SR-45, and the construction was performed using the multi-drill method. The multi-drill allows for construction in extremely narrow sites where buildings are closely packed together. For more details about this case, please check the related links. 【Case Overview】 ■ Project Name: Removal of existing foundation piles on a site of approximately 56m² ■ Construction Date: September 5, 2022 ■ Location: Kojimachi, Chiyoda Ward, Tokyo ■ Details: Φ1000 L=19.0m, 3 locations *For more information, please download the PDF from the related links or contact us.

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Here is an introduction to a case study of underground obstacle removal conducted by our company. Construction work at the wall edge in Nihonbashi Bakurocho, Tokyo. The site conditions are in a narrow area within the city. We carried out the removal of the existing structure using the SR-45 multi-drill excavator and employed our original tool, the special Kelly grab. 【Case Overview】 ■ Project Name: Wall Edge Construction Using SR-45 Original Kelly Grab ■ Construction Date: December 14, 2022 ■ Location: Nihonbashi Bakurocho, Tokyo ■ Details: Φ1000 L=3.5m, 15 locations *For more details, please download the PDF from the related link or contact us.

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We would like to introduce a case study of underground obstacle removal that our company has conducted. This involves the removal of a Φ1000 underground structure in Nihonbashi Bakurocho, Tokyo. Using our original Kelly grab developed in-house, we can carry out the removal efficiently and safely. We have provided images of this case in the related links, so please take a look. 【Case Overview】 ■ Project Name: Removal of underground structure using our in-house developed Kelly grab ■ Construction Date: December 21, 2022 ■ Location: Nihonbashi Bakurocho, Tokyo ■ Details: Removal of Φ1000 underground structure *For more details, please download the PDF from the related links or contact us.

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