TJM Design

What TJM Design does

TJM Design Corporation (株式会社TJMデザイン) is a privately held Japanese manufacturer founded in 1909 and headquartered in Itabashi, Tokyo. The company operates a multi-brand industrial and consumer products portfolio across four business divisions: (1) the Tajima Tool division, Japan's only "comprehensive construction tools manufacturer," producing measuring tools, cutters, marking tools, and safety equipment including safety harnesses; (2) the Kitchen division, comprising Kitchenhouse, Japan's only high-end custom kitchen manufacturer offering made-to-order kitchens in the 2 million yen-plus price class, and GRAFTEKT, a mass-market sub-brand launched in 2014; (3) the Dinet division, an internal corporate venture established in 2000 that provides web- and telephone-based support services to small-to-medium construction companies using DX and staff expertise; and (4) the COOX division, a premium kitchen equipment brand specializing in high-end range hoods and appliances.

The company's core technology is the TJM Production System (TPS), a one-piece flow production methodology developed at the Fujioka factory that combines handmade craftsmanship with machine-production efficiency. TPS, paired with a self-specification customer system and an integrated design-manufacturing-sales DX strategy, enables high-quality short-lead-time production of diverse custom kitchen layouts. TJM operates seven manufacturing locations (Chichibu, Ota, Makita, Yokoze, Fujioka in Japan plus Shanghai) and 13 kitchen showrooms across major Japanese cities, with overseas subsidiaries in Shanghai (manufacturing and sales since 1995) and Los Angeles (TAJIMA TOOL CORPORATION for US sales).

TJM generates revenue primarily through one-time hardware sales across its branded divisions, with FY2025 group consolidated revenue of ¥50.4 billion (¥40.1 billion standalone) and a group headcount of 1,322 employees (951 domestic, 371 overseas). Distribution is conducted via direct sales, factory-direct showroom channels for kitchens, and remote web/telephone channels for Dinet services. The company positions its brands to avoid price competition, emphasizing quality-first craftsmanship, after-sales service, and unique "only-one-in-Japan" positioning.

Name

TJM Design

Legal name

株式会社TJMデザイン

Website

https://tjmdesign.com

Company type

Private

Founded year

1909

Operating status

Operating

Headcount range

501–1,000 employees

Short description

TJM Design Corporation is a Japanese manufacturer founded in 1909 operating four business divisions: Tajima construction tools, Kitchenhouse/GRAFTEKT custom kitchens, Dinet web-based services for SMB construction firms, and COOX premium kitchen equipment. FY2025 group revenue of ¥50.4 billion is distributed across construction industry and residential consumer segments.

Ownership category

akta.pro rank

Product category

Construction Tools and Kitchen Manufacturing

NAICS

Custom Architectural Woodwork and Millwork Manufacturing (337212), Household Appliance Manufacturing (3352), Household and Institutional Furniture and Kitchen Cabinet Manufacturing (3371)

SIC

Cutlery, Handtools & General Hardware (3420), Miscellaneous Furniture & Fixtures (2590), Household Furniture (2510)

akta.pro primary industry

Custom Cabinet Design & Build (HSAPAIAA)

akta.pro secondary industries

Kitchen Cabinets & Custom Millwork Showrooms (CRAIAFAA), Joinery, Millwork & Casework Installation (Cabinetry, Built-Ins) (IMAFANAJ), Built-In Appliance Installation (Wall Ovens, Cooktops, Built-In Microwaves) (HSAGANAE)

Keywords

• Construction tools manufacturing
• Custom kitchen manufacturing
• Kitchen equipment manufacturing
• Construction safety equipment
• Construction support services

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices25 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Tool Division (タジマツール): Manufactures and sells comprehensive construction tools including measures, cutters, saws, and safety equipment. One-time product sales with strong brand presence avoiding price competition.
2. Kitchen Division (キッチンハウス/GRAFTEKT): Premium custom kitchens sold at 2 million yen+ class and mass-market brand GRAFTEKT. One-time purchase model with 13 luxury showrooms nationwide for customer experience. Achieved profitability in 2021 after 16 years, targeting 20 billion yen annual revenue.
3. Dinet Division (ダイネット): Web and telephone-based support services for small-to-medium construction companies. Staff provide secretarial-like services remotely. 20-person team achieving profit margins comparable to tool division.
4. Coox Division (クックス): Premium range hoods and kitchen equipment. After exiting budget range hood business in 2021, now focuses on high-end kitchen appliances.

Go-to-market motion2 records

Distribution channels6 records

Marketing channels3 records

Core offering

TJM Design is a diversified Japanese manufacturer that produces and sells comprehensive construction tools under the Tajima brand (tape measures, cutters, marking tools, safety harnesses) and high-end custom kitchens under the Kitchenhouse brand, supported by a mass-market kitchen sub-brand (GRAFTEKT), premium kitchen equipment (COOX range hoods), and remote web/tel support services for small-to-medium construction companies (Dinet). The company operates 13 luxury kitchen showrooms nationwide and manufactures across multiple factories in Japan and China. Its manufacturing combines handmade craftsmanship with proprietary factory automation through the TJM Production System (TPS) to enable high-quality, short-lead-time custom kitchen production.

Product overview

TJM Design is a diversified Japanese manufacturing company with multiple business divisions operating under a multi-brand portfolio structure. The company comprises four main business units: (1) the Tool Division (Tajima) - Japan's only comprehensive construction tools manufacturer offering tools, storage, and safety equipment; (2) the Kitchen Division with two brands - premium custom kitchen manufacturer Kitchenhouse and mass-market brand GRAFTEKT; (3) Dinet - a unique web/TEL support service for construction companies; and (4) COOX - high-end kitchen equipment manufacturer. The company also has overseas manufacturing and sales operations in China and the US. The brands operate somewhat independently while sharing TJM's production systems, quality-first DNA, and DX strategies.

Differentiator

Problem solved

Functional benefit

Brands

• Tajima (タジマ): 総合建築工具ブランド (Comprehensive construction tools brand)
• kitchenhouse (キッチンハウス)
• GRAFTEKT (グラフテクト)
• DINET (ダイネット)
• COOX (クックス)

Products and services

• Tajima (タジマ) - Comprehensive Construction Tools
• Tajima construction tools - tape measures, cutters, marking tools, safety harnesses Japan's only comprehensive construction tools manufacturer and brand under TJM Design, developing and manufacturing tools, marking tools, cutters, storage solutions, and safety equipment across multiple categories simultaneously through the Safety/Sefu system. Products include tape measures, marking chalks, cutters, and safety harnesses, sold via direct sales with a unique 'create a sales floor' approach, addressing Japan's aging workforce, labor shortages, physical burden reduction, and site safety needs.

Quantifiable outcome

• Kitchenhouse achieved profitability in 2021 after 16 years since 2005 acquisition
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Four partnerships are on record, tiered minor and core.

• Chronoba Design (クロノバデザイン株式会社)minorOthersGroup company specializing in store and office space design, design, construction, and implementation.
• Shanghai Tajima Tools (上海田島工具有限公司)coreOthersTajima China manufacturing and sales subsidiary operating since 1995.
• TAJIMA TOOL CORPORATIONcoreOthersTajima US sales subsidiary providing products adapted for the US market.
• 銀葛会 (Ginkatsukai)coreStrategic or Co-development PartnerPartnership started 50 years ago with supplier companies for joint study sessions on quality improvement, defect reduction, and 3S practices. Modeled after an automotive company's approach to supply chain management improvement. Continues today with mutual understanding on appropriate pricing and product selling prices.

Scale indicators12 records

Recent moves9 records

Expansion highlights5 records

Market position

Competitive moat6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries5 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 TJM Design