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  1. Home
  2. Building materials, supplies and fixtures manufacturers
  3. ロンタイ
Building materials, supplies and fixtures manufacturers
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ロンタイ

Establishment1957 year
capital6300Ten thousand
number of employees121
addressOsaka/Moriguchi-shi/3-1-11 Kameda-cho
phone06-6902-9401
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last updated:May 11, 2026
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  • Company information
  • Products/Services(100)
  • catalog(171)
  • news(6)

ロンタイ Company Profile

For 60 years with the greenery of this country, we will connect the green landscapes to the future.

Gentle green spreads across the slopes of the road, blending into the landscape. This green may be what is called "slope greening," which is planned and planted during road construction. Our work in slope greening aims to prevent slope collapse, protect people's lives and communities, and restore damaged ecosystems. With the belief of "green that protects people," Rontai is committed to greening efforts.

Business Activities

Manufacturing and sales of civil engineering greening materials and greening construction.

Recommended information

Landslide Prevention Greening Method "Long Strong Net Method" to be released in January 2025.

Landslide Prevention Greening Method "Long Strong Net Method" to be released in January 2025.

Protects the surface layer of the slope to a depth of about 1 meter. Achieves high greening quality and erosion prevention effects using wire, mesh, anchors, and vegetation mats. 【*Presentation of advantages of the construction method available】

The "Ronstrong Net Method" by Rontai is a slope protection technique that enables "collapse prevention up to a depth of 1 meter" by combining vegetation mats with anchor materials and wire ropes. By connecting vegetation mats that cover the entire slope with wire mesh and wire ropes to anchor materials, it effectively prevents surface erosion through greening while also contributing to the prevention of surface collapse. 【Features】 - Protects a depth greater than the roots of plants (approximately 1 meter of surface), suppressing intermediate slope collapses and wedge-type collapses at the slope shoulder. - Can be constructed without large machinery such as spraying machines or belt conveyors. - Enables early stable greening with vegetation mats that include straw. Since manual construction is possible, it allows for reduced construction time and costs in small areas or locations where machinery access is difficult. Please utilize it for disaster prevention, disaster recovery, mountain conservation, and national resilience. *We are currently offering free materials introducing the product catalog and the benefits of the method! You can view them via PDF download. Feel free to consult us for detailed specifications.

Products/Services (100)

For measures against difficult construction sites! Drone greening method "Kuhab Greening Method" product image
For measures against difficult construction sites! Drone greening method "Kuhab Greening Method"
"Cutting Soil Use" Decomposable Vegetation Mat 'Ronquet Orga (with Fertilizer Bag)' product image
"Cutting Soil Use" Decomposable Vegetation Mat 'Ronquet Orga (with Fertilizer Bag)'
Greening with natural materials: The power of straw becomes the power of greening. product image
Greening with natural materials: The power of straw becomes the power of greening.
Catalog: Longtai Erosion Prevention Series product image
Catalog: Longtai Erosion Prevention Series

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catalog(171)

Survey responses are required to view e-book details. Click to view the e-book.

[Catalog] Vegetation Mat for Law Frames 'Shiroku Mat Law Frame Type'

[Catalog] Vegetation Mat for Law Frames 'Shiroku Mat Law Frame Type'

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Case Study Collection: Long Strong Net Construction Method Achievements

Case Study Collection: Long Strong Net Construction Method Achievements

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[Catalog] Air Seeding Greening Method PR Materials

[Catalog] Air Seeding Greening Method PR Materials

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[Catalog] Airborne Capsule

[Catalog] Airborne Capsule

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news(6)

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Announcement of the page update for the large vegetation sandbag "Green Scram."

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The page for the large vegetation sandbag "Green Scram" has been uploaded. This product stabilizes slopes when used as a retaining wall and prevents soil runoff. Please consider it for localized heavy rain, landslides, riverbank erosion, typhoon preparedness, and post-disaster recovery. For more details, please refer to the related products and catalogs below.

Jul 13, 2022

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[Construction Achievements] Embankment Improvement and Other Works in the Upper Abukuma River, Fukushima Area (Fukushima Prefecture)

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Rontai Co., Ltd. has a wealth of experience in slope greening throughout Japan. At the request of the Ministry of Land, Infrastructure, Transport and Tourism, "Ronkette de Agreen" was applied in the construction of levee improvement works in the upper Abukuma River area of Fukushima. The construction area was 3,600 m², and the seed mixture included non-native species (short grass). Details of the construction case can be viewed through the related links.

Jun 22, 2022

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Construction Achievements: Second Construction of the Oya Okawa River External Sediment Control Dam in the Southern Aki Mountain Range (Hiroshima Prefecture)

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Rontai Co., Ltd. has a wealth of experience in slope greening throughout Japan. At the request of the Hiroshima Western Mountain Range Erosion Control Office, we constructed the second phase of the dam at the Oya-Ogawa Stream in the southern Aki Mountain Range, using "Shirokumatt T-50." The construction area was 980 m², with a seed mixture that included non-native species (others), aimed at disaster prevention and recovery. Details of the construction case can be viewed through the related links.

Jun 22, 2022

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Detailed information

Company name ロンタイ
number of employees121
Contact addresspostalcode 570-0011 Osaka/ Moriguchi-shi/ 3-1-11 Kameda-choView on map TEL:06-6902-9401 FAX:06-6905-9070
Key Partners◆Ministry of Land, Infrastructure, Transport and Tourism ◆Ministry of Agriculture, Forestry and Fisheries ◆Each expressway ◆Local governments, etc. (via agents)
<Affiliated Companies> ◆ Talox Co., Ltd. ◆ Iris Co., Ltd. ◆ Dalian Longtai Landscaping Engineering Co., Ltd.
Business LocationsClick here for the list
Industry Building materials, supplies and fixtures manufacturers
ロンタイ Building Image
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