Kanto Ube Holdings

What Kanto Ube Holdings does

Kanto Ube Holdings (now MU Holdings Kanto) is a Tokyo-based holding company that, through its subsidiaries, manufactures and sells ready-mixed concrete across the Greater Tokyo metropolitan area covering Tokyo, Kanagawa, Saitama, and Chiba prefectures. The group's manufacturing footprint comprises 11 factories with a combined hourly capacity of approximately 1,800+ m³/h and an annual supply volume of roughly 800,000 m³ — approximately 1% of Japan's national ready-mix concrete supply. Its product portfolio includes JIS-certified regular concrete (18–36 N/mm²), government-ministerial-certified high-strength concrete up to 120 N/mm², lightweight concrete, and specialty formulations developed with parent UBE Mitsubishi Cement's R&D. Production uses forced twin-shaft mixers (up to 6,000L at the Yokohama plant) under a Technical Center equipped with a 3000kN compression tester and temperature-variable test rooms.

The group operates a vertically integrated manufacturing-delivery model. Kanto Ube Concrete Industrial, Chiba Ube Concrete Industrial, Kozawa Shoji, and Tokyo Ryoko Concrete manufacture the product, while wholly-owned Kanto Mannaka Transport (47 dedicated mixer trucks, GPS fleet management, three urban bases) handles short-distance delivery, supplemented by cooperative transport fleets that bring total capacity to 250+ trucks. Distribution is split between direct factory-to-site sales to large construction companies and general contractors and eight regional ready-mix concrete cooperatives (Tokyo Area, Santama, Tamagawa, Kanagawa, Shonan, Saitama Chuo, Chiba West, Chiba Central) that aggregate demand from mid-market contractors. Pricing is project-specific per cubic meter, varying by strength class, cement type, aggregate type, slump, and delivery distance. The group is 100%-owned by UBE Mitsubishi Cement Corporation, which supplies cement and R&D; MU Holdings Kanto was renamed in April 2026 to unify the Kanto-area ready-mix operations under a single management structure.

Name

Kanto Ube Holdings

Legal name

関東宇部コンクリート工業株式会社

Website

https://kanto-ube.co.jp

Company type

Private

Founded year

2002

Operating status

Operating

Short description

Kanto Ube Holdings (now MU Holdings Kanto) manufactures and sells ready-mixed concrete — including high-strength, lightweight, and specialty formulations — across the Greater Tokyo metropolitan area through 11 JIS-certified factories and an owned delivery fleet, serving general contractors and mid-market construction companies.

Ownership category

akta.pro rank

Product category

Ready-Mix Concrete Manufacturing

NAICS

Ready-Mix Concrete Manufacturing (32732)

SIC

Concrete, Gypsum & Plaster Products (3270)

akta.pro primary industry

Ready-Mix Concrete Production & Delivery (IMADAAAA)

Keywords

• Ready-mix concrete
• High-strength concrete
• Concrete manufacturing
• Construction materials
• Concrete transportation

Headquarters

HQ city

Higashi-shinagawa

HQ country

Japan

HQ region

Asia

Offices16 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Operations, Supply Chain, Personnel, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Ready-Mix Concrete Manufacturing and Sales: The group manufactures and sells ready-mix concrete (生コンクリート) through its network of factories in the Greater Tokyo metropolitan area (Tokyo, Kanagawa, Saitama, Chiba). Revenue is generated through direct sales to construction companies, general contractors, and via cooperative sales organizations (協同組合). Products include ordinary concrete, high-strength concrete (up to 120N/mm²), and lightweight concrete, all certified under JIS and government standards.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Kanto Ube Holdings manufactures and sells ready-mix concrete (生コンクリート) through 10+ certified factories in the Greater Tokyo metropolitan area (Tokyo, Kanagawa, Saitama, Chiba). Its product portfolio includes ordinary concrete, high-strength concrete (up to 120 N/mm²), lightweight concrete, and specialty formulations, all certified under JIS and government ministerial standards. A wholly owned transport subsidiary (Kanto Mannaka Transport) and a network of regional concrete cooperatives deliver concrete directly to construction sites on a just-in-time basis.

Product overview

Kanto Ube Holdings operates as a leading readymixed concrete manufacturer and supplier in the Greater Tokyo metropolitan area, producing and delivering various concrete types including regular, high-strength, and lightweight concrete through multiple certified factories. The company structure includes manufacturing facilities (関東宇部コンクリート工業), specialized transportation services (関東生コン輸送), and distribution operations (小澤商事グループ). The product portfolio centers on JIS-certified and ministerially-certified concrete products, with distribution handled through cooperative associations and direct sales to construction companies, supported by a fleet of mixer trucks and GPS-based fleet management systems.

Differentiator

Problem solved

Functional benefit

Products and services

• Regular Concrete (普通コンクリート)
• High-Strength Concrete (高強度コンクリート)
• Lightweight Concrete (軽量コンクリート)
• Special Concrete (特殊コンクリート) Environmentally-conscious concrete and specialty formulations developed in collaboration with UBE Mitsubishi Cement's research department, including heat-of-hydration controlled concrete and other specialty products.
• Ready-Mix Concrete Transportation Service (生コンクリート輸送サービス) Specialized transportation of ready-mix concrete from manufacturing plants to construction sites using mixer trucks, ensuring delivery within specified timeframes and quality standards. Operated by the group's subsidiary Kanto Mannaka Transport with 47 trucks across 3 bases and a dedicated dispatch center.
• Ministerial Factory Certified Concrete Products (工場単独大臣認定製品) High-strength concrete products certified under Article 37, Item 2 of the Building Standards Act, with Toyosu, Oi, and Mizonokuchi factories certified up to 120 N/mm² design strength across multiple cement types (Normal, Moderate Heat, Low Heat, Silica Fume Cement).

Quantifiable outcome

• Annual ready-mix concrete supply of ~800,000 m³, representing approximately 1% of Japan's total ready-mix concrete production (national total ~80 million m³)
• +2 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• Tokyo Ryoko Concrete Co., Ltd. (株式会社東京菱光コンクリート)coreStrategic or Co-development PartnerGroup company (subsidiary under MU Holdings Kanto) manufacturing and selling ready-mix concrete in the Greater Tokyo area. Established July 1965. Capital JPY 100 million. As of April 2026, included in the integrated Kanto area ready-mix concrete business operation under MU Holdings Kanto.
• Chiba Ube Concrete Industrial Co., Ltd. (千葉宇部コンクリート工業株式会社)coreStrategic or Co-development PartnerGroup company (subsidiary under Kozawa Shoji Group within MU Holdings Kanto) operating one factory in Chiba (Shinminato). Produces ordinary and lightweight concrete with JIS certification and ministerial approval. Part of the integrated group operations for the Chiba area.
• Kozawa Shoji Co., Ltd. (小澤商事株式会社)coreStrategic or Co-development PartnerGroup company (subsidiary under MU Holdings Kanto) operating two factories (Narita and Sodegaura) in Chiba Prefecture plus the Chiba Ube Concrete Industrial subsidiary. Specializes in ready-mix concrete manufacturing and other construction material sales. Capital and group organization integrated with Kanto Ube Group since April 2007. Headquarters in Kisarazu, Chiba.
• Kanto Mannaka Transport Co., Ltd. (関東生コン輸送株式会社)coreStrategic or Co-development PartnerGroup company (100% subsidiary of MU Holdings Kanto) specializing in ready-mix concrete transport. Operates 47 mixer trucks from 3 bases (Oi, Toyosu, Fuchu) and a dedicated dispatch center. Provides integrated manufacturing-transportation-logistics for the group. Holds G-Mark certification (safety excellence) for two locations.
• Tokyo Area Ready-Mixed Concrete Cooperative (東京地区生コンクリート協同組合)coreChannel Partner/ Reseller/ DistributorRegional cooperative through which Kanto Ube Concrete Industrial sells products from its Toyosu, Oi, Mizonokuchi, and Urayasu factories. Coordinates joint purchasing and sales activities for member companies.
• Santama Ready-Mixed Concrete Cooperative (三多摩生コンクリート協同組合)coreChannel Partner/ Reseller/ DistributorRegional cooperative through which Kanto Ube Concrete Industrial sells products from its Fuchu, Iruma, and Sagamihara factories.
• Kanagawa Ready-Mixed Concrete Cooperative (神奈川生コンクリート協同組合)coreChannel Partner/ Reseller/ DistributorRegional cooperative through which Kanto Ube Concrete Industrial sells products from its Yokohama factory.
• Saitama Chuo Ready-Mixed Concrete Cooperative (埼玉中央生コン協同組合)minorChannel Partner/ Reseller/ DistributorRegional cooperative through which Kanto Ube Concrete Industrial's Iruma factory sells products in Saitama.
• Tamagawa Ready-Mixed Concrete Cooperative (玉川生コンクリート協同組合)minorChannel Partner/ Reseller/ DistributorRegional cooperative with broader membership serving the Tamagawa area, in which Kanto Ube Concrete Industrial participates through multiple factories.
• Shonan Ready-Mixed Concrete Cooperative (湘南生コンクリート協同組合)minorChannel Partner/ Reseller/ DistributorRegional cooperative in the Shonan area through which Kanto Ube Concrete Industrial's Sagamihara factory participates.
• Chiba West Ready-Mixed Concrete Cooperative (千葉西部生コンクリート協同組合)coreChannel Partner/ Reseller/ DistributorRegional cooperative in western Chiba Prefecture through which both Kanto Ube Concrete Industrial (Urayasu factory) and Kozawa Shoji Group (Chiba Ube Concrete Industrial) participate.

Scale indicators6 records

Recent moves11 records

Expansion highlights5 records

Market position

Competitive moat6 records

Key risks5 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles16 records

Subsidiaries4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Kanto Ube Holdings