（株）大広

What （株）大広 does

株式会社大広 (Daiko Co., Ltd.) is a privately held Japanese custom plastic and acrylic manufacturer founded in August 1960 (originally as Ito Plastics Works / 伊藤プラスチック工業所) and operating under its current name since 1993. The company specializes in made-to-order processing of acrylic resin, PET resin, polycarbonate, and rigid PVC boards, offering in-house cutting, machining, silk printing, and finishing services. Its product portfolio comprises five core categories — displays (ディスプレイ), silk printing (シルク印刷), cutting sheets (カッティングシート), signage (サイン) including neon and steel-structure signs, and other custom fixtures — plus custom-sized droplet infection prevention partitions added as a COVID-era product line. All orders are accepted from single custom pieces through mass-production runs.

The business operates from two sites: the Ikebukuro headquarters in Toshima-ku, Tokyo (sales and administration, relocated to its current address in 1996), and the Moriya City, Ibaraki Prefecture factory (relocated February 2012). As of the company profile, the firm directly employs approximately 20 staff and draws on a network of around 60 cooperative partner companies to flex production capacity. Registered capital stands at ¥10,000,000, and the company maintains banking relationships with Mizuho Bank (Nishi-Ikebukuro branch) and Mitsubishi UFJ Bank (Ikebukuro East Exit branch).

Revenue is generated through direct, project-based sales to commercial retail businesses and general commercial customers needing store fixtures, POP displays, signage, and promotional materials. The go-to-market is sales-led with customers engaging via phone, FAX, contact form, or website inquiry; no distributor, reseller, or institutional sales channels are in evidence. The firm is family-owned (President and Representative Director 伊藤友二 / Ito Yuji, appointed May 2019), has no subsidiaries, no disclosed institutional investment, and no public listing. Membership in the Tokyo Outdoor Advertising Art Cooperative Association dates back to October 1963.

Name

（株）大広

Legal name

株式会社大広

Website

https://dai-ko.co.jp

Company type

Private

Founded year

1960

Operating status

Operating

Headcount range

1–10 employees

Short description

株式会社大広 (Daiko Co., Ltd.) is a Tokyo-based custom plastic and acrylic manufacturer founded in 1960, producing displays, signage, silk printing, and cutting sheets for retail and commercial customers through in-house and partner-company fabrication.

Ownership category

akta.pro rank

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Marketing or Sales

Revenue model

1. Custom Plastic/Acrylic Product Manufacturing: Manufactures custom plastic and acrylic products including displays, POP items, and signage. Serves both single custom orders and mass production needs. Includes planning, design, manufacturing, delivery, and on-site installation services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Daiko Co., Ltd. is a specialty manufacturer that produces custom-made plastic and acrylic products for commercial and retail use. Its offerings include display stands, silk-printed signage, cutting sheets, advertising signs (including neon and standard signs), and bespoke droplet infection prevention partitions. The company handles the entire workflow in-house—from planning and design through manufacturing at its Ibaraki factory to delivery and on-site installation—serving customers from single custom orders to mass production runs.

Product overview

株式会社大広 is a specialized manufacturer of custom plastic and acrylic processing, offering made-to-order products from single pieces to mass production. The company operates its own manufacturing facilities with skilled craftsmen and provides comprehensive services from planning and design to manufacturing. The product portfolio includes five main categories: Displays (ディズプレイ), Silk Printing (シルク印刷), Cutting Sheets (カッティングシート), Signs (サイン), and Other Products (その他). The company also manufactures custom-sized droplet infection prevention partitions. All products are produced in-house, enabling high quality and quick delivery. The business handles acrylic resin boards, rigid PVC boards, and various other plastics with cutting and molding加工 capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• ディスプレイ (Displays) Custom-made acrylic display products for stores and commercial spaces, produced in-house by skilled craftsmen from single pieces to mass production volumes.
• シルク印刷 (Silk Printing) Silk screen printing applied to plastic and acrylic products for signage, POP materials, and promotional items, tailored to commercial customers.
• カッティングシート (Cutting Sheets) Custom cutting sheet products for signage, lettering, and surface decoration applications on commercial premises.
• サイン (Signs) Signage products including general advertising signs, neon signs, standard signs, and steel structure signage for commercial use.
• 飛沫感染対策のパーテーション (Droplet Infection Prevention Partitions) Custom-sized acrylic/plastic partition boards produced as droplet infection prevention measures for commercial spaces, with original-size support.
• その他製品 (Other Products) Additional custom plastic and acrylic products including fixtures and promotional tools for commercial customers.

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

One partnership is on record.

• 東京屋外広告美術協同組合 (Tokyo Outdoor Advertising Art Cooperative Association)minorOthers · 1 October 1963The company joined the Tokyo Outdoor Advertising Art Cooperative Association in October 1963. This is a membership in an industry trade organization rather than a commercial partnership.

Scale indicators4 records

Recent moves5 records

Expansion highlights3 records

Broad incumbents

• Toppan Holdings (凸版印刷): Major Japanese printing and information communications group producing POP displays, signage, and commercial decorative materials. Comparable to Daiko in serving commercial retail display needs, but at far greater scale, with broader materials capabilities (paper, film, electronics-integrated displays) and national reach.
• Dai Nippon Printing (DNP): Japan's largest printing conglomerate with a significant POP/display and signage business serving retail and commercial customers nationwide. While orders of magnitude larger than Daiko and operating across a broad portfolio, DNP's display division competes for the same custom retail fixtures and signage budgets Daiko addresses.
• Takiron (タキロン): Japanese plastic products manufacturer producing PVC, acrylic, and polymer sheets and fabricated products used in displays, signage, and construction. Operates upstream and downstream of Daiko — supplying similar plastic substrates while also competing in fabricated plastic display components.
• Kuraray (クラレ): Japanese chemical company producing acrylic resins, films, and engineered polymers (including the "Parapet" acrylic sheet line used in displays and signage). Comparable to Daiko in serving the downstream acrylic display market, primarily as a materials supplier but with adjacent fabricated products.
• LINTEC Corporation (リンテック): Japanese manufacturer of adhesive films, specialty papers, and signage materials including graphic films used for outdoor advertising, vehicle wraps, and signage. Comparable to Daiko in supplying the Japanese signage and visual merchandising supply chain, though at larger industrial scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/%EF%BC%88%E6%A0%AA%EF%BC%89%E5%A4%A7%E5%BA%83

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 （株）大広