Nagao Ltd

What Nagao Ltd does

Nagao Ltd (長尾産業株式会社) is an industrial technical trading company headquartered in Hitachi City, Ibaraki Prefecture, Japan, founded in 1974 and operating as a wholly-owned subsidiary of Todoroki Sangyo Co., Ltd. (轟産業株式会社) since 2004. The company runs a dual business model described as rare in Japan: a Sales Division distributing and renting electronic measuring instruments, testing equipment, and related calibration and repair services from approximately 80 manufacturers; and a Technical Division performing vibration testing, environmental testing, seismic testing, transportation simulation, on-site measurement and consulting at power plants and industrial facilities, and vibration/data analysis. Owns and operates specialized equipment including the North Kanto region's largest-class EM2605S horizontal/vertical composite vibration testing system with built-in constant temperature/humidity chamber, high-power ESPEC ARS-1100-10 temperature/humidity chambers, ESPEC TSA-203ES-W thermal shock systems, and Q-FOG CRH 1100 HTCR composite cycle corrosion testing equipment at the Tokai Testing Center (TTC) opened in 2020, with a Second Test Building added in March 2026. The Technical Department holds JIS Q 17025:2018 (ISO/IEC 17025:2017) testing laboratory accreditation (RTL05020) obtained January 2023.

Revenue is generated through six streams: one-time equipment sales, usage-based rentals, professional services for vibration and environmental testing, on-site measurement and consulting, calibration and repair services, and custom equipment design and manufacturing. Pricing is entirely quote-based with no public disclosure, and the typical contract structure is multi-year. The go-to-market is an enterprise field sales model: 10 sales personnel organized in 3 groups conduct direct, account-based engagement with major customers, supported by a Technical Department that delivers on-site measurement and consulting at customer facilities (power plants, nuclear, heavy industry). Marketing channels are limited and primarily recruitment-focused (job fairs, regional employment events) supplemented by a corporate website, YouTube technical content channel, X/Twitter earthquake monitoring feed, and earned media such as a 2024 BS11 Sustainability Compass feature.

Customer concentration centers on Hitachi Group companies (Hitachi Ltd Defense, Power Grid, Railways, Nuclear, and R&D business units, plus Hitachi High-Tech and Astemo), the power and energy sector (TEPCO, Japan Atomic Power, JAEA), heavy manufacturing (Mitsubishi Heavy Industries, Komatsu), aerospace (JAXA), and government/research institutions (AIST, Ibaraki University). Operations are regional — confined to the Kanto Region — with two sites (Hitachi headquarters and Tokai Village TTC). Capital is 30 million yen, headcount is 11-50, and the company is privately held with no disclosed funding rounds. The 50-year anniversary was reached in 2023, and the Second Test Building expansion in 2026 signals the next phase of capacity growth into environmental testing alongside the established vibration testing business.

Name

Nagao Ltd

Legal name

長尾産業株式会社

Website

https://nagaoltd.co.jp

Company type

Private

Founded year

1974

Operating status

Operating

Headcount range

11–50 employees

Short description

Nagao Ltd is a Japanese industrial technical trading company founded in 1974 that uniquely combines sales and rental of electronic measuring instruments with in-house vibration and environmental testing services, serving Hitachi Group companies, power and heavy-industry firms, and government research institutions across the Kanto region.

Ownership category

akta.pro rank

Product category

Industrial Testing Services and Measuring Instruments

NAICS

Testing Laboratories and Services (541380), Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Electronic and Precision Equipment Repair and Maintenance (811210)

SIC

Services-Testing Laboratories (8734), Industrial Instruments For Measurement, Display, And Control (3823), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Condition Monitoring & Predictive Maintenance Instrumentation (Vibration/ultrasound, oil analysis sensors, IIoT monitoring) (IMAGAFAG)

akta.pro secondary industries

Rotating Equipment Inspection & Vibration Diagnostics (Turbines, Compressors, Pumps) (EUAEAHAJ), Test, Measurement & Calibration Equipment Manufacturing Services (ATE, DAQ, metrology electronics) (IMAGAGAH)

Keywords

• Vibration testing services
• Electronic measuring instruments
• Environmental testing services
• On-site measurement consulting
• Instrument rental calibration

Headquarters

HQ city

Hitachi

HQ country

Japan

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Sales of Measurement Instruments: Sales of electronic measurement instruments, testing machines, and related equipment from domestic and international manufacturers. Includes sound and vibration-related equipment, various electronic measuring instruments.
2. Equipment Rental: Rental services for measurement instruments and testing equipment to customers who need temporary access.
3. Vibration Testing Services: Technical testing services including vibration testing, environmental testing, seismic testing, transportation testing, and vibration/temperature composite testing at company-owned facilities.
4. On-site Measurement and Consulting: On-site measurement and analysis services at power plants (nuclear, thermal, hydroelectric) and industrial facilities. Includes equipment diagnosis and consulting services for rotating machinery.
5. Calibration and Repair Services: Calibration and repair services for measurement instruments, including management of rental equipment.
6. Custom Equipment Design and Manufacturing: Design and manufacturing of custom testing machines, equipment, and software based on specific customer requirements.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels6 records

Core offering

Nagao Ltd is an industrial technical trading company with a unique dual business model. Its Sales Division handles the sale, rental, calibration, and repair of electronic measuring instruments (sound level meters, vibration meters, FFT analyzers, data recorders) sourced from 79+ manufacturers. Its Technical Division operates the Tokai Testing Center (TTC) to provide vibration testing, environmental testing, seismic testing, and transportation simulation testing, and performs on-site vibration measurement and consulting at power plants and industrial facilities. The company owns and operates North Kanto's largest-class vibration testing system (EM2605S) and is JIS Q 17025 accredited.

Product overview

Nagao Ltd operates as an industrial technical trading company with a unique dual business model: a Sales Division (営業部門) handling electronic measuring instruments and testing equipment sales, rental, calibration, and repair services; and a Technical Division (技術部門) providing vibration testing and on-site measurement/consulting services. The company owns and operates vibration testing systems (EM2605S, A30, A45) and environmental testing equipment (high-power constant temperature/humidity chambers, thermal shock testers, composite cycle corrosion testers) at its Tokai Testing Center (TTC) in Tokai Village and headquarters in Hitachi City. Measuring instruments include Rion acceleration pickups and vibration meters, Ono Sokki O-Solution DS-5000 FFT analyzers, TEAC data recorders, and Bently Nevada diagnostic systems. The portfolio spans the full value chain from instrument sales and rental to testing services and data analysis.

Differentiator

Problem solved

Functional benefit

Brands

• NDGs: Nagaosangyo Development Goals：長尾産業の開発目標。17項目の綱領、信条、経営基本方針、行動規範をまとめた長尾産業独自の発展目標。

Products and services

• Vibration Testing Services (振動試験) Vibration testing services for industrial products, components, and equipment including standard tests, seismic tests, transportation tests, and vibration/temperature combined testing. Conducted at the headquarters test building and Tokai Testing Center (TTC) for enterprise customers in manufacturing, defense, power, and automotive sectors.
• Environmental Testing Services (環境試験) Environmental testing services including high-power constant temperature/humidity testing, thermal shock testing, and composite cycle corrosion testing, operated at the Tokai Testing Center's second test building for industrial product reliability verification.
• On-site Measurement and Consulting (現地計測・解析業務) On-site vibration and other measurement and analysis services at nuclear, thermal, and hydroelectric power plants, as well as local industrial plant sites. Includes rotational equipment diagnostics and consulting for power and energy customers.
• Vibration Analysis and Data Processing (データ解析・計測器校正) Analysis of vibration testing and on-site measurement data including vibration, acoustic, pressure, rotational, and stress data. Also includes calibration, rental management, and repair of company-owned measuring instruments.
• Electronic Measuring Instruments Sales (電子計測器販売) Sales of electronic measuring instruments including sound level meters, vibration meters, analyzers, FFT analyzers, power analyzers, oscilloscopes, data loggers, and temperature measurement devices sourced from domestic and international manufacturers such as Rion, Ono Sokki, TEAC, and Bently Nevada.
• Equipment Rental, Calibration, and Repair Services (レンタル・校正・計器修理) Rental of measuring and testing instruments for short-term access, calibration services for measurement instrument reliability, and repair services for measuring equipment through affiliated partner companies.
• Electronic Catalog (電子カタログ) Digital catalog containing all handled products, suppliers, technical services, rental/calibration services, and measuring instrument repair companies, spanning 104 pages covering the full product and service portfolio of the company.

Quantifiable outcome

• 90%+ of current sales staff started with no instrument sales experience
• +2 more outcomes

Named customers12 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered minor and core.

• SoundOne Corporation (株式会社SoundOne)minorGTM or Marketing Partner · 24 October 2025Seminar co-promotion relationship where SoundOne delivers webinars about sound recording applications and Nagao introduces the seminar to its customer base. Sound One Recorder mobile app enables easy audio recording with GPS and video synchronization for mobility applications.
• IMV CorporationcoreTechnology or IntegrationIMV manufactures vibration testing equipment including EM2605S system installed at Tokai Testing Center. Primary equipment supplier for vibration testing systems.
• ESPEC CorporationcoreTechnology or IntegrationESPEC supplies environmental testing equipment including high-power temperature/humidity chambers (ARS-1100-10) and thermal shock testing systems (TSA-203ES-W) installed at second test building.
• Rion Co., Ltd. (リオン株式会社)coreTechnology or IntegrationKey supplier of sound and vibration measurement equipment including noise meters, vibration meters, and analyzers. Provides acoustic vibration technical support program.
• Ono Sokki Co., Ltd. (株式会社小野測器)coreTechnology or IntegrationSupplier of measurement instruments including FFT analyzers, rotation/torque sensors, displacement and temperature measuring equipment.
• Hitachi SunNexus Ibaraki (日立SunNexus茨)minorGTM or Marketing PartnerRegional rugby team sponsored by Nagao as Official Partner (Gold). Promotes regional sports and community engagement. Team competes in Top East League A group aiming for Japan Rugby League One entry.
• Astemo Rivale IbarakiminorGTM or Marketing PartnerWomen's volleyball team sponsored by Nagao. Competes in SV.LEAGUE WOMEN. Nagao participates in Ibaraki Prefecture themed home game events.
• Orix Rentec CorporationcoreChannel Partner/ Reseller/ DistributorMeasurement equipment rental partner. Provides short-term equipment access for customers needing temporary measurement solutions.
• Japan Quality Assurance Organization (JQA)coreTechnology or IntegrationCalibration partner providing measurement instrument calibration and certification services to maintain measurement reliability.

Scale indicators5 records

Recent moves10 records

Expansion highlights5 records

Broad incumbents

• MTS Systems (AMETEK): Global provider of mechanical testing and simulation systems (servo-hydraulic and electromechanical test equipment). Comparable as a large incumbent in industrial vibration and structural testing.
• B&K (Brüel & Kjær / HBK): Global leader in sound and vibration measurement instruments, data acquisition systems, and acoustic test solutions. A broader incumbent that competes across Nagao's full vibration measurement portfolio.
• TÜV Rheinland Japan: International TIC provider with Japanese labs offering environmental, electrical, and product safety testing. Comparable as a broader accredited competitor for industrial and energy-sector testing.
• SGS Japan: Global testing, inspection, and certification (TIC) company with significant Japanese operations. Comparable as an accredited testing services provider that competes for the same enterprise and government testing work Nagao serves.
• Intertek Japan: Global TIC provider offering product, environmental, and reliability testing with Japanese labs. Comparable as an ISO 17025 accredited competitor for the same industrial customer base.

Direct peers

• IMV Corporation: Japanese manufacturer of vibration testing systems and provider of EMC/environmental testing services. Directly comparable as both an equipment maker and a competing vibration testing lab; also a current core technology partner to Nagao.
• Rion Co., Ltd. Japanese specialist in sound and vibration measurement instruments (meters, pickups, analyzers). Comparable as a measurement instrument maker competing in the same product categories Nagao distributes.
• Ono Sokki Co., Ltd. Japanese manufacturer of FFT analyzers, rotation/torque sensors, and displacement/temperature instruments. Directly comparable to Nagao's distribution line in vibration, acoustic, and rotating-machinery measurement.
• ESPEC Corporation: Leading Japanese manufacturer of environmental testing chambers (temperature, humidity, thermal shock, corrosion). Comparable both as an OEM supplier to Nagao and as a competing environmental testing services provider.

Others

• Keysight Technologies: Global electronic test and measurement instrument manufacturer (oscilloscopes, signal analyzers, power analyzers). Comparable as an upstream OEM in the electronic measurement instrument categories Nagao distributes.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/Nagaoltd
• YouTubeyoutube.com/@長尾産業株式会社

Compliance5 records

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 Nagao Ltd