Tagawa Sangyo

What Tagawa Sangyo does

Tagawa Sangyo Co., Ltd. (田川産業株式会社) is a 100-year-old Japanese specialty manufacturer of shikkui (traditional lime plaster) and diatomaceous earth building materials, headquartered at a 40,000 m² factory site in Tagawa City, Fukuoka Prefecture. Founded in 1924 as Gyōhei Chemical Industry and incorporated in 1946, the company pioneered Japan's first premixed shikkui under the Shirokabe brand in 1964 and operates across at least eight business divisions: standard shikkui products, cultural heritage restoration, Limix non-sintered ceramic tiles, B2C DIY (NURI²), soybean-based road paint, fine ceramics, OEM manufacturing, and overseas projects. Core technology centers on an earth pit kiln salt-burning limestone process that produces higher-whiteness, crack-resistant quicklime unattainable in steel kilns, with the proprietary Limix platform hardening by atmospheric CO2 absorption and eliminating kiln-firing emissions. The company operates three wholly-owned subsidiaries — Mineral Chemistry Industrial (calcium products, 1956), Tagawa Sangyo Trading (sales, 1967), and Kabekoubou (colored plaster, 1995) — and distributes through direct enterprise sales to design offices, builders, and contractors, via building material retailers, through the Shikkui Consultation Room showroom at headquarters (relocated January 2024), and via the nuri2.jp B2C e-commerce site.

Customer segments span residential construction, commercial facilities (retail, healthcare, transport), cultural heritage restoration (over 200 documented projects including Osaka Castle, Kumamoto Castle, multiple UNESCO World Heritage churches, and projects supervised by Kengo Kuma Architects), OEM/B2B partners, and DIY consumers. Pricing is quote-based and undisclosed for most B2B lines, while consumer DIY SKUs use unit pricing. The company's value proposition rests on natural-material VOC-free indoor air quality, humidity regulation, fire resistance, antibacterial/odor-elimination properties, and historical material reproduction accuracy; Cradle to Cradle certification across four product categories (2021) and the 2007 Monodzukuri Nippon Prime Minister's Award for Limix underpin its differentiation.

Recent strategic activity is internationally oriented: in June 2024 the company announced a partnership with UNIDO and Turkey's Dogus Group to upcycle Ukraine war rubble into Limix building materials (2026 field demonstration, 2029 commercialization target), it has joined the THE ZEN Project Kyushu materials consortium for a Las Vegas exhibition, and it operates a parallel Turkey earthquake debris upcycling initiative. The company is privately held, family-controlled under the Gyōhei lineage (founder Gyōhei Shichirō; current representative director president Gyōhei Shimon/Nobuyoshi Yukihira), with stated capital of ¥10 million and approximately 30 employees at headquarters.

Name

Tagawa Sangyo

Legal name

田川産業株式会社

Website

https://shirokabe.co.jp

Company type

Private

Founded year

1924

Operating status

Operating

Short description

Tagawa Sangyo is a 100-year-old Japanese manufacturer of shikkui (lime plaster) and diatomaceous earth building materials, serving construction contractors, cultural heritage restorers, and DIY consumers via direct sales, distributors, and e-commerce.

Ownership category

akta.pro rank

Product category

Lime Plaster Building Materials

NAICS

Lime and Gypsum Product Manufacturing (3274), Gypsum Product Manufacturing (327420), Pottery, Ceramics, and Plumbing Fixture Manufacturing (32711)

SIC

Concrete, Gypsum & Plaster Products (3270)

akta.pro industry

PRIMARYIMAIAKAA

Architectural & Decorative Painting (Interior/Exterior)

Industrials, Manufacturing & Construction/Industrial Services & Facility Operations/Industrial & Commercial Painting, Coating & Surface Treatment

Keywords

• Lime plaster products
• Diatomaceous earth materials
• Cultural heritage restoration
• Ceramic building tiles
• Traditional building materials

Headquarters

HQ city

Fukuoka

HQ country

Japan

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Shikkui Products (漆喰部門): Standard and custom shikkui building materials sold to construction companies, design offices, and homeowners. Product lines include Shirokabe series, Kodaishikkui (古代漆喰), Kabekoubou series, Limore, MILIME, and Sclean. Sold through direct sales, distributors, and building material retailers.
2. Cultural Heritage Restoration (文化財修復部門): Specialized restoration services for national treasures, important cultural properties, and historically significant buildings. Includes old wall material component analysis, custom project-specific shikkui formulation and manufacturing. Premium pricing for specialized analysis and custom reproduction work.
3. Limix Division (Limix部門): Non-sintered shikkui ceramic tiles for walls and floors. Standard plain tiles, standard designed tiles, and custom designed tile products. Also includes Limix Plus tiles using power plant limestone. B2B sales to construction and design firms.
4. B2C Products (B2C部門): NURI² DIY shikkui kits and CIRQUA series products sold directly to consumers through e-commerce channels (nuri2.jp) and online retailers.
5. Soybean Paint (大豆塗料部門): Road marking paint products manufactured and sold.
6. Fine Ceramics (ファインセラミックス部門): Custom fine ceramics manufacturing on a commissioned basis for various industrial applications.
7. OEM Manufacturing (OEM製造部門): Custom shikkui and wall material formulation and manufacturing for other brands on a private-label/OEM basis.
8. Overseas Projects (海外プロジェクト部門): Ukraine reconstruction project using Limix to upcycle demolition debris into building materials; Turkey earthquake debris upcycling Limix tile project. UNIDO partnership and Dogus Group collaboration for commercial implementation by 2029.
9. Lumie CUBE & ecopo: Interior deodorizing products (Lumie CUBE) and DIY unburned planter kits (ecopo) sold as consumer/home products through retail and e-commerce channels.
10. Analysis Services (受託分析部門): Material analysis services and building material consulting provided to external clients.

Pricing tiers

Go-to-market motion3 records

Distribution channels7 records

Marketing channels7 records

Core offering

Tagawa Sangyo manufactures and sells traditional Japanese shikkui (lime plaster) and diatomaceous earth building materials for residential, commercial, and cultural heritage applications. The product range spans premixed plaster series (Shirokabe, Kodaishikkui, Kabekoubou), the world's first non-sintered shikkui ceramic tiles (Limix), modern shikkui (Limore), DIY consumer kits (NURI²), interior deodorizing products (Lumie CUBE), planter kits (ecopo), and specialized cultural property restoration services.

Product overview

Tagawa Sangyo is a 100-year-old Japanese manufacturer specializing in shikkui (traditional lime plaster) and diatomaceous earth building materials. The product portfolio centers on the core shikkui product lines (城かべ series with over 50 years history, 古代漆喰 series, 壁公望 series) and the innovative non-fired Limix ceramic tiles. The company also offers DIY products (NURI²), modern shikkui (Limore), interior products (Lumie CUBE, ecopo), and specialized services including cultural property restoration (200+ projects). Recent initiatives include Ukraine reconstruction projects using CO2-absorbing Limix materials. The architecture is a unified product platform approach with multiple product series addressing different market segments (professional contractors, DIY consumers, cultural heritage restoration, commercial interiors).

Differentiator

Problem solved

Functional benefit

Brands

• Shirokabe (城かべ): Long-selling series of traditional premixed plaster products, including standard Shirokabe, Premium Shirokabe, Shirokabe Super, and specialty variants for roofing and waterproofing.
• Kodaishikkui (古代漆喰)
• Kabekoubou (壁公望)
• Limix (LIMIX)
• Limore (リモア)
• NURI² (ぬりぬり)
• Lumie CUBE
• ecopo
• CIRQUA

Quantifiable outcome

• 99%+ antibacterial effectiveness demonstrated in laboratory testing against multiple bacterial strains
• +4 more outcomes

Named customers19 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Dogus Group (土耳其大型建設会社)coreStrategic or Co-development Partner · 25 June 2024Partnership with Turkey's Dogus Group (DOGUŞ Group), one of Turkey's largest conglomerates, to develop a rubble upcycling business in Ukraine using Limix non-sintered ceramic technology. The project aims to convert Ukraine war rubble and byproducts into building materials using Tagawa's LIMIX technology. Joint commercialization targeting 2026 field demonstration and 2029 commercial launch. Dogus Group contributes local market presence and construction industry network in Turkey and the broader region.
• UNIDO (United Nations Industrial Development Organization)coreStrategic or Co-development PartnerPartnership with UNIDO (国際連合工業開発機関) for the Ukraine reconstruction project. UNIDO provides institutional backing and international coordination for the rubble upcycling initiative using Tagawa's non-sintered ceramic LIMIX technology. The collaboration supports environmental load reduction, reconstruction, and employment creation simultaneously. UNIDO engagement elevates the project's international credibility and aligns with UN sustainable development goals.
• THE ZEN Project Consortium (九州の素材メーカー)minorGTM or Marketing PartnerCollaboration with other Kyushu material manufacturers through THE ZEN Project to jointly exhibit at international trade shows, starting with Las Vegas. The consortium enables shared booth presence and cross-promotion at international events to expand overseas market reach for all participating Kyushu materials companies.
• Kengo Kuma Architects (隈研吾建築事務所)coreStrategic or Co-development PartnerArchitecture firm that recommended Tagawa Sangyo for the Hamada Soy Sauce white-wall warehouse restoration project (2016 Kumamoto earthquake recovery). Kengo Kuma Architects supervised the overall renovation and specifically selected Tagawa Sangyo for the shikkui wall restoration work on the registered tangible cultural property building.

Scale indicators5 records

Recent moves8 records

Expansion highlights8 records

Broad incumbents

• Lixil Group Corporation: Japan's largest comprehensive housing and building materials company, offering wall finishes, siding, and interior products. Comparable as a Japanese building materials peer with diversified residential and commercial product lines.
• Kansai Paint Co., Ltd. Japan's leading paint and coatings manufacturer serving construction, automotive, and industrial markets. Comparable as a Japanese surface-treatment company targeting architectural interior/exterior applications, though focused on liquid coatings rather than plaster.
• Saint-Gobain (Weber): Global building materials conglomerate whose Weber division produces lime-based mortars, renders, and facade solutions. Comparable as a multinational player in the broader lime/plaster category, though operating across thousands of SKUs versus Tagawa's specialized shikkui portfolio.
• Yoshino Gypsum Co., Ltd. Japan's largest manufacturer of gypsum board and plaster products, dominating the broader Japanese plaster market. Comparable to Tagawa Sangyo as a domestic specialty plaster manufacturer, though operating at significantly larger scale and focused on modern gypsum board rather than traditional shikkui.
• Knauf Gips KG: Family-controlled German global leader in gypsum-based building materials including plasters, boards, and finishes. Similar in family ownership and mineral-based plaster focus, but at vastly greater international scale than Tagawa Sangyo.
• Nichiha Corporation: Japanese manufacturer of exterior siding and wall materials, including ceramic-based cladding. Comparable as a Japanese building materials specialist serving residential and commercial construction with proprietary surface technology.

Direct peers

• Sto SE & Co. KGaA: German global leader in facade systems, including lime-based and mineral plasters for interior and exterior architectural finishes. Closest international peer to Tagawa Sangyo in terms of mineral plaster product portfolio and architectural application focus.
• Baumit GmbH: Austrian manufacturer of lime and mineral-based plasters, renders, and facade systems with strong European brand presence. Comparable to Tagawa Sangyo in lime-based architectural surface treatments and the integration of natural materials into modern construction.
• Kikusui Chemical Industries Co., Ltd. Japanese manufacturer of architectural paints, plasters, and specialty coatings for construction applications. Directly comparable to Tagawa Sangyo as a Japanese manufacturer of decorative wall finishes serving similar B2B and B2C segments.

Regional players

• ADFORS (Saint-Gobain): Saint-Gobain subsidiary focused on construction fabrics and wall reinforcement systems commonly used with plaster applications. Adjacent peer in the broader wall-finishing ecosystem with comparable specialty building materials focus.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 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 Tagawa Sangyo