Daiyu

What Daiyu does

Daiyu Co., Ltd. (株式会社ダイユー) is a privately held Japanese industrial sewing and cutting manufacturer specializing in sewn components for automobile seat interiors, with a secondary line of sewn products for nursing and medical beds. Founded in 1979 in Yamagata Prefecture and headquartered in Shinjo City, Daiyu operates as a Tier 2/3 supplier to Japanese Tier 1 seat integrators — named customers include TS Tech, Toyota Boshoku (and its Tohoku subsidiary), NHK Spring, and Sunikku — with sewing work conducted for 6 domestic and foreign automakers across 20 vehicle models, corresponding to roughly 1 million automobiles' worth of seat production annually. The technical stack is built around industrial sewing systems supported by NC (Numerical Control) cutting machines, laser cutting stations, and proprietary ISO-FIX button installation equipment used to affix child-seat position marks to seat covers. Components include seat covers, door trims, and armrests, with safety-critical airbag sewn parts also produced. Daiyu holds ISO 9001 (quality management) and ISO 14001:2015 (environmental management, cert #E01-233) certifications and is the founding family-controlled operator led by President and CEO Takeshi Yakuwa.

Daiyu monetizes through direct B2B contract manufacturing for OEM customers, with no disclosed pricing model and no public revenue. Pricing is contract-based per the OEM specifications of each program; revenue streams divide into (1) automobile seat sewn products — covers, door trims, armrests, airbag parts — supplied through direct OEM relationships, and (2) medical/nursing bed sewn products supplied to leading bed manufacturers, with stated experience exceeding 20 years. The go-to-market is OEM-embedded: Daiyu does not own a consumer brand in seats or beds but qualifies into customer bills of material via existing Tier 1 relationships and proximity-based plant colocation (e.g., the 2023 Suzuka Factory operates on TS Tech premises in Mie Prefecture). Customers are exclusively enterprise buyers; there is no SMB or retail distribution channel.

Geographically Daiyu runs a Japan-China-Thailand manufacturing footprint. Domestically it operates four factories and three service/outsourcing offices across Yamagata, Saitama, Mie, and Iwate Prefectures, with the head office complex in Shinjo Core Industrial Park. Overseas, wholly owned subsidiaries comprise Guangzhou Dayou Car Zuo Co., Ltd. (est. 2001, Guangdong), Jiaxing Otomo Automobile Chair Co., Ltd. (est. 2000, Zhejiang), Luoding Daiyu Automobile Chair Co., Ltd. (est. 2016, Guangdong), and DAIYU SEAT (THAILAND) CO., LTD (est. 2012, Saraburi). Capital is JPY 10 million and total headcount was 628 as of December 2024, down materially from 1,529 in June 2018 — a contraction most pronounced in the overseas workforce. Marketing activity is limited to a corporate website, social profiles (Instagram, Facebook, X), and 2025 sponsorships of the Montedio Yamagata soccer club and the Soft Darts Professional Tour JAPAN.

Name

Daiyu

Legal name

DAIYU Co., Ltd.

Website

https://daiyu-seat.co.jp

Company type

Private

Founded year

1979

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Daiyu Co., Ltd. is a privately held Japanese Tier 2/3 manufacturer of sewn automobile seat covers, door trims, and armrests, supplying Japanese Tier 1 seat integrators (TS Tech, Toyota Boshoku, NHK Spring, Sunikku) across 6 automakers and 20 models, with secondary production of sewn products for nursing and medical beds.

Ownership category

akta.pro rank

Product category

Automotive Interior Components Manufacturing

NAICS

Motor Vehicle Seating and Interior Trim Manufacturing (33636)

SIC

Motor Vehicles & Passenger Car Bodies (3711)

akta.pro primary industry

Automotive Interior Trim & Cockpit Components Manufacturing (Dash/Console/Door Panels/Headliners) (IMACAKAB)

akta.pro secondary industry

Automotive Interior Comfort & Convenience Components Manufacturing (Armrests/Cupholders/Storage/Interior Hardware) (IMACAKAJ)

Keywords

• Automotive sewn products
• Automobile seat covers
• Industrial sewing manufacturer
• NC cutting services
• Nursing bed manufacturing

Headquarters

HQ city

Shinjo

HQ country

Japan

HQ region

Asia

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Automobile Seat Sewn Products: Design and manufacturing of sewn products for automobile seats including seat covers, door trims, and armrests. Supplied to major domestic and international automobile manufacturers through direct OEM relationships.
2. Nursing/Medical Bed Products: Sewn products for nursing beds and medical beds supplied to leading bed manufacturers. Over 20 years of track record in this segment.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Daiyu designs and manufactures sewn interior components for automobiles—including seat covers, door trims, and armrests—and sewn products for medical/nursing beds. The company supplies 6 domestic and foreign automobile manufacturers across 20 models, producing parts for approximately 1 million automobiles annually, and provides sewn components to leading bed manufacturers for elderly care applications. Manufacturing is supported by NC cutting, laser cutting, ISO-FIX button installation, and ISO 9001/ISO 14001:2015 certified processes.

Product overview

Daiyu is an industrial cutting and sewing manufacturer specializing in automobile seat components. The company's product portfolio includes sewn automobile seat covers, door trims, and armrests as interior parts, complemented by NC cutting and laser cutting services for precise material processing. Additional offerings include ISO-FIX button installation services for child safety seats and medical/nursing bed manufacturing. With over 40 years of experience, Daiyu supplies approximately 1 million automobile seats annually across 20 models to 6 major domestic and foreign automobile manufacturers, while also leveraging its cutting and sewing expertise to serve the healthcare sector with nursing bed products.

Differentiator

Problem solved

Functional benefit

Products and services

• Automobile Seat Covers (Sewn Products) Industrial-sewn automobile seat covers manufactured for major Japanese and international automobile manufacturers, with annual production covering approximately 1 million automobiles across 20 models supplied to 6 OEMs.
• Door Trims Sewn interior automobile door trim components manufactured using high-precision NC and laser cutting technology to meet automotive safety and durability standards.
• Armrests Sewn automobile interior armrest components produced using Daiyu's cultivated automotive-seat manufacturing know-how.
• Medical and Nursing Bed Sewn Products Sewn products supplied to leading bed manufacturers for medical beds and long-term care/nursing beds, with over 20 years of track record providing high-quality products for elderly care applications.
• NC Cutting Services Numerical Control (NC) cutting services that automatically cut materials following pre-programmed data, enabling efficient handling of wide varieties of products with no dimensional error.
• Laser Cutting Services Laser cutting services for precise fabric and material cutting of automobile seat components, delivering the high precision, safety, and durability required for automotive parts including airbag sewn components.
• ISO-FIX Button Installation Specialized ISO-FIX button installation service that adds position display marks used for attaching child safety seats to automobile seats, using a highly accurate proprietary process designed to protect child safety.

Quantifiable outcome

• Supplying sewn products to 6 domestic and foreign automobile manufacturers across 20 models
• +2 more outcomes

Named customers6 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Four partnerships are on record, tiered minor.

• Montedio YamagataminorGTM or Marketing Partner · 1 January 2025Local soccer team sponsorship. Starting from 2025 season, became official main sponsor and uniform sponsor for the academy. Provides and maintains bench seats for ND Soft Stadium Yamagata.
• Soft Darts Professional Tour JAPANminorGTM or Marketing Partner · 1 January 2025Official main sponsor of the Soft Darts Professional Tour JAPAN starting from 2025 season. Also sponsors professional soft darts players Tetsuya Fujiwara, George Nishitani, Kosuzu Iwao, and Ryuta Arihara.
• Japan Sewing Technology Research Association (JSTRA)minorOthersMember organization of JSTRA, an industry association for sewing technology research in Japan. Supports industry collaboration and technology advancement in the sewing sector.
• Shinjo Core Industrial Park Location Enterprise CouncilminorOthersMember of the Shinjo Core Industrial Park Location Enterprise Council, a local business association for companies located in the industrial park.

Scale indicators4 records

Recent moves10 records

Expansion highlights4 records

Broad incumbents

• Toyota Boshoku Corporation: Toyota Group Tier 1 manufacturer of seat systems, interior and filter products. Daiyu is a supplier into Toyota Boshoku's seat assembly operations; Toyota Boshoku is a direct comparable as a full-system seat producer with global manufacturing footprint.
• Lear Corporation: Global Tier 1 automotive seat and electrical systems supplier. Comparable at the seat system level; Lear's seating business competes with the same Japanese OEMs that Daiyu's customers supply, providing relevant benchmarking for volumes and pricing.
• Adient plc: Global leader in automotive seating with operations across Asia, Europe, and the Americas. Comparable as a Tier 1 seat system assembler that consumes sewn cover components similar to those Daiyu produces for its Japanese Tier 1 customers.
• NHK Spring Co., Ltd. Diversified Japanese automotive components maker including seating, suspension springs, and powertrain. NHK Spring is both a Daiyu customer and a comparable in seat cover and interior trim manufacturing at scale.
• Magna International Inc. Global automotive parts supplier with seating capabilities among its broad portfolio. Useful as a scale benchmark for diversified Tier 1 seating/interior competitors operating in the same global OEM programs as Daiyu's customers.
• Faurecia SE: Global automotive interior and seat systems supplier (now FORVIA). Comparable as a seat cover and trim integrator with global manufacturing; relevant for understanding how Tier 1 seat interiors are structured around sewn component supply chains.

Direct peers

• Morito Co., Ltd. Japanese apparel fasteners and automotive interior components manufacturer with sewing and assembly capabilities. Comparable as a smaller Japanese Tier 2/3 sewing-oriented supplier serving automotive interior applications.
• TS Tech Co., Ltd. Major Japanese automotive seat manufacturer and one of Daiyu's primary customers. TS Tech produces complete seating systems and operates globally, making it both a buyer of Daiyu's sewn components and the most direct functional peer in Japan automotive seating.
• TACHI-S Co., Ltd. Specialized Japanese Tier 1 seat manufacturer competing in the same global OEM seat programs as Daiyu's customers. Highly comparable as a Japan-based seat-focused supplier with overseas manufacturing in China, Thailand, and the Americas.
• Howa Textile Industry Co., Ltd. Japanese textile and sewing manufacturer with automotive interior applications, supplying sewn products to Japanese OEMs. Closest functional peer to Daiyu as a Japan-headquartered sewing specialist serving the automotive value chain.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/daiyu_coltd
• Facebookfacebook.com/profile.php
• Instagraminstagram.com/daiyu_yamagata

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Daiyu