Sanko

What Sanko does

Sanko (株式会社サンコー, ticker 6964 on the Tokyo Stock Exchange) is a Japanese precision manufacturer founded in 1963 and headquartered in Shiojiri, Nagano Prefecture, with 501–1,000 consolidated employees. The company operates three integrated product lines: precision pressed products (automotive airbag components, DC-DC converter mounting parts), plastic injection-molded components (battery terminals, junction boxes, fuse modules, inverter terminal blocks), and custom mechatronic mechanisms (slide units for in-vehicle meters, center-console hinges, high-torque ceiling-suspension hinges for in-vehicle monitors). Underpinning these products is an in-house mold manufacturing capability utilizing 5-axis machining centers and 3D CAD/CAM, producing approximately 70 new molds per month to support ~250 press machines (20t–400t capacity) and ~70 injection molding machines (15t–450t capacity).

Sanko's revenue model is B2B direct sales to Japanese automotive OEMs, with inquiry-based quotation and sales offices in Nagano, Aichi, and Fukuoka. Five factories operate in Japan (four in Nagano Prefecture, one in Fukuoka) plus a 100% owned subsidiary, THAI SANKO Co., Ltd., in Ayutthaya, Thailand (established 2011, full-scale production from May 2012), serving the Southeast Asia region. The primary customer segment is the automotive industry — particularly Japanese OEMs building HEV, PHV, and EV vehicles — with secondary development in green-energy and new-materials processing (smart grids, busbars, flexible sensors, thick copper pieces). The business holds IATF16949, ISO, and DX Certified Operator (METI, 2026) credentials, and is operating under a new medium-term management plan, SPACE2030, announced in May 2026.

The company makes money primarily through hardware sales of safety-critical and electronics components, with pricing negotiated on a per-program basis rather than published publicly. Marketing channels are weighted toward direct enterprise relationships, corporate website inquiry forms, the Automotive World exhibition, and YouTube content showcasing technology; recruitment uses the Mynavi platform for new graduates. The CEO, Takemura Kiyoshi (竹村 潔), has led the company since April 2011 after joining in 1983, providing leadership continuity through the Thai expansion and certification programs.

Name

Sanko

Legal name

株式会社サンroco

Website

https://sko.co.jp

Company type

Public

Founded year

1963

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Sanko is a Japanese precision manufacturer founded in 1963, producing pressed metal parts, plastic components, and custom mechatronic assemblies primarily for major Japanese automotive OEMs building HEV, PHV, and EV vehicles, with operations across five Japanese factories and a Thai subsidiary.

Ownership category

akta.pro rank

Product category

Automotive Component Manufacturing

NAICS

Machine Shops; Turned Product; and Screw, Nut, and Bolt Manufacturing (3327)

SIC

Bolts, Nuts, Screws, Rivets & Washers (3452)

akta.pro primary industry

Custom Injection Molding & Contract Manufacturing (Job Shops/CMs) (IMANAFAJ)

Keywords

• Precision metal stamping
• Plastic injection molding
• Automotive component manufacturing
• Mold design manufacturing
• Mechatronic assemblies

Headquarters

HQ city

Shiojiri

HQ country

Japan

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Precision Pressed Products: Manufacturing and sales of precision pressed products including automotive airbag components, DC-DC converter mounting parts, and various metal components.
2. Plastic Products: Manufacturing and sales of plastic components including battery terminals, junction boxes, fuse modules, and inverter terminal blocks for automotive applications.
3. Mechatronic Goods Manufacturing: Manufacturing of mechatronic goods including slide mechanical units for on-vehicle meters, hinges for center consoles, and high-torque ceiling-suspension hinges for in-vehicle monitors.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Sanko manufactures and sells precision pressed metal components (automotive airbag parts, DC-DC converter mounting parts), injection-molded plastic components (battery terminals, junction boxes, fuse modules, inverter terminal blocks), and custom mechatronic assemblies (slide units for in-vehicle meters, various hinges for center consoles and in-vehicle monitors). Production is enabled by in-house ultra-high-precision mold design and manufacturing and supported by approximately 250 press machines and 70 injection molding machines across five factories in Japan and one in Thailand.

Product overview

Sanko (株式会社サンコート) is a precision manufacturing company with over half a century of expertise in mold technology. The company operates a unified manufacturing platform centered on three core product categories: Pressed Products (automotive airbag components and DC-DC converter parts), Plastic Products (battery terminals, junction boxes, fuse modules, inverter terminal blocks), and Mechanism Development Design (custom mechanical components including slide units and various hinge assemblies). These products are supported by in-house mold manufacturing capabilities and mass production equipment (approximately 250 press machines and 70 injection molding machines). Sanko serves primarily the automotive industry, particularly hybrid and electric vehicle segments, providing components from mold design through final assembly in an integrated production system.

Differentiator

Problem solved

Functional benefit

Products and services

• Pressed Products (Precision Pressed Metal Components) Precision pressed metal components manufactured for Japanese automotive manufacturers, including deep draw processed automotive airbag components (passenger seat and driver airbags) and DC-DC converter mounting parts for vehicles.
• Plastic Products (Injection-Molded Plastic Components) Injection-molded plastic components for automotive applications, including battery terminals, junction boxes, fuse modules, and inverter terminal blocks for electric and hybrid vehicles.
• Mechanism Development Design (Custom Mechatronic Assemblies) Custom-designed mechatronic components for automotive applications, including slide mechanical units for in-vehicle meters, center console hinges, impact-lock hinges, high-torque ceiling-suspension hinges for in-vehicle monitors, and orthogonal and parallel 2-axis hinges.
• Mold Design and Manufacturing Service In-house ultra-high-precision mold design and manufacturing service for pressed and plastic products, utilizing 5-axis machining centers with rotary tilt axes, 3D CAD/CAM, and NC machines, with capacity of approximately 70 new molds per month and quick delivery times.

Quantifiable outcome

• DX certified as DX-Ready enterprise by Ministry of Economy, Trade and Industry
• +2 more outcomes

Named customers1 record

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

One partnership is on record.

• THAI SANKO Co., Ltd.coreOthers · 17 January 2011Wholly-owned subsidiary (100% interest) of Sanko Co., Ltd. Established in Rojana Industrial Park, Ayutthaya, Thailand. BOI certified in April 2011. Factory building completed August 2011, full-scale operation started May 2012. Capital: 400 million THB. Manufacturing of precision pressed products, plastic products, and mechatronic goods.

Scale indicators8 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Yorozu Corporation: Japanese manufacturer of automotive suspension and precision pressed components with operations across Japan and Southeast Asia. Comparable to Sanko in precision stamping technology, Japanese OEM customer base, and ASEAN footprint strategy.
• Takao Kogyo: Japanese precision stamping manufacturer serving automotive OEMs with deep-draw and pressed metal components. Highly comparable to Sanko's Pressed Products business in process technology, customer profile, and tier-2 supplier positioning.
• Shiroki Corporation: Japan-based tier-1 automotive parts supplier specializing in door frames, weatherstrips, and precision pressed/molded components for Japanese auto OEMs. Comparable in scale, customer mix, and integrated stamping/plastic manufacturing approach.
• Kasai Kogyo: Japanese automotive parts manufacturer producing interior/exterior components and pressed metal parts for Japanese OEMs. Comparable in B2B direct sales motion and tier-supplier relationship model with major Japanese automakers.
• F-Tech: Japanese manufacturer specializing in chassis and suspension pressed components for Honda and other OEMs. Comparable precision stamping capability, Japanese auto OEM customer base, and similar small-to-mid-cap scale profile.
• Howa Sangyo: Japanese automotive parts maker producing precision pressed components and assemblies for major Japanese OEMs. Direct competitor to Sanko in precision sheet metal forming with similar customer and technology profile.
• Nifco: Listed Japanese manufacturer of plastic fasteners and engineered plastic components for global automotive OEMs. Comparable to Sanko's Plastic Products line (battery terminals, junction boxes, fuse modules) and shares the same Japanese auto OEM customer base.

Regional players

• Topy Industries: Japan-based manufacturer of automotive wheels and steel/pressed components with Thailand production footprint. Comparable to Sanko's precision pressed product technology and similar Thailand-based ASEAN expansion posture.

Broad incumbents

• Musashi Seimitsu Industry: Larger Japanese precision automotive component maker with global footprint, producing powertrain and chassis components. Comparable technology pedigree (precision manufacturing) but broader product portfolio and larger scale than Sanko.
• Toyota Boshoku: Major Japanese automotive interior and filter components supplier, part of the Toyota group. Overlaps with Sanko's automotive OEM exposure and precision component manufacturing capabilities, though at significantly larger scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• YouTubeyoutube.com/channel/UC5_mbQG2sgFm9tTnizkPHxQ/videos
• LinkedInlinkedin.com/company/sanko-co.-ltd

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries1 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 Sanko