Seiken
Seiken is a privately held Japanese specialty engineering firm founded in 1947, providing proprietary ground freezing civil works, HVAC and cleanroom construction, laboratory animal breeding systems, cranes, and Hitachi industrial equipment distribution to public-works contractors, government agencies, pharmaceutical and food manufacturers, and academic research institutions.
- Company typePrivate
- Founded1947
- HeadquartersOsaka, Japan
- Headcount251–500
- GTM typeB2B
- OfferingServices
What Seiken does
Seiken Co., Ltd. (株式会社精研) is a privately held Japanese specialty engineering and construction firm founded in 1947 in Osaka. The company operates across four core divisions: (1) HVAC and building equipment engineering (air conditioning, cleanrooms, plumbing, electrical, IoT control, HACCP-compliant food/pharma facilities); (2) ground freezing civil engineering using a proprietary artificial ground freezing method developed jointly with Kyoto University's Disaster Prevention Research Institute since 1959, with over 500 completed projects since 1962; (3) special air conditioning products including the Anicon unidirectional-airflow laboratory animal breeding system, the Losscon water-spray total heat exchanger (RCC and RAA types), and the Deotron deodorizing heat exchanger; and (4) cranes and automated transport systems including a patented inversion-function crane with dual-hook configuration.
The company's revenue model combines professional services (equipment construction and ground freezing design-to-completion contracts), hardware sales (as a Hitachi authorized dealer since 1953 distributing motors, inverters, PLCs, and industrial computers; and as manufacturer of cranes and specialized transport equipment), and managed services (remote monitoring, periodic inspection, and renewal engineering with annual maintenance contracts). Customer segments span Japanese public-works contractors, government preservation bodies (including the National Treasure Takamatsuzuka Tumulus project since 2005), pharmaceutical and food manufacturers, academic research institutions, manufacturing facilities, and Hitachi product end-users.
Seiken operates dual headquarters in Osaka and Tokyo with eight regional offices and one distribution/warehouse facility (Ichihara Center), employs 314 people (as of September 2025) with an average tenure of 18.3 years, holds ISO 9001 and ISO 14001 certifications, and is licensed as a Specific Construction Contractor under Japan's MLIT. The company is independently owned and profitable, with a 62.0% equity ratio and ¥200 million in registered capital, and has remained free of external capital backing throughout its 78+ year history.
Seiken firmographics
Firmographics- Name
- Seiken
- Legal name
- 株式会社精研
- Website
- https://seikenn.co.jp
- Company type
- Private
- Founded year
- 1947
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Seiken is a privately held Japanese specialty engineering firm founded in 1947, providing proprietary ground freezing civil works, HVAC and cleanroom construction, laboratory animal breeding systems, cranes, and Hitachi industrial equipment distribution to public-works contractors, government agencies, pharmaceutical and food manufacturers, and academic research institutions.
- Ownership category
- akta.pro rank
Seiken industry classification
Industry- Product category
- Specialized Engineering and Construction Services
- NAICS
- Plumbing, Heating, and Air-Conditioning Contractors (238220), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (3334), Construction Machinery Manufacturing (33312)
- SIC
- General Bldg Contractors - Nonresidential Bldgs (1540), General Industrial Machinery & Equipment (3560), Construction, Mining & Materials Handling Machinery & Equip (3530)
- akta.pro primary industry
- HVAC & Refrigeration Contracting (IMAFALAB)
- akta.pro secondary industry
- Systems Engineering & Technical Program Management (BPAHAIAI)
Keywords
Where Seiken is headquartered
LocationHeadquarters
- HQ city
- Osaka
- HQ country
- Japan
- HQ region
- Asia
Offices8 records
Markets served
Seiken business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales, Supply Chain
Revenue model
- 設備工事（空調衛生設備工事）: ビル・工場等の空气調和設備・给排水衛生設備・電気設備の設計施工。顧客企业提供設計から施工まで一貫したエンジニアリングサービス
- 地盤凍結工法の設計施工: 上下水道・地下鉄・共同溝等の都市土木工事における冻结工法。設計・研究から施工・アフターまで対応
- 日立製品販売（日立特約店）: 日立製作所・日立グループの特約店として、空調機器・冷凍冷藏機器・産業機器・電子機器・エレベーター等の販売
- クレーン・自動搬送装置の設計製作: オーバーヘッドクレーン・橋型クレーン・自動搬送システム等の設計製作・据え付け
- メンテナンス・サービス: 納入機器・システムの保守点検・修理・リニューアル工事。遠隔監視システムによる24時間対応
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | 国土交通大臣許可の特定建設業者として、公共工事・大型民間設備工事を対応 |
| Subscription | Annual | メンテナンス契約（遠隔監視・定期点検） |
Go-to-market motion3 records
Distribution channels3 records
Marketing channels5 records
Seiken product offering
Product offeringCore offering
Seiken is a multi-division engineering contractor providing (1) air conditioning, sanitary, electrical, and cleanroom building equipment construction; (2) proprietary ground freezing civil engineering construction with over 500 projects since 1962; (3) special air conditioning systems including the proprietary Anicon laboratory animal breeding system and Roscon/Deotron total heat exchangers; and (4) cranes, automated transport systems, and Hitachi industrial equipment resale. The company executes design-to-construction under direct contracts with government, infrastructure, pharmaceutical, food manufacturing, and academic research clients.
Product overview
Seiken (株式会社精研) is a comprehensive engineering company operating as a multi-business portfolio rather than a single platform product. Its core offerings span four divisions: (1) Air Conditioning and Building Equipment (空気調和・給排水衛生設備), including air conditioning, cleanrooms, Labox cell processing facilities, plumbing, electrical, IoT/automation control, and renovation/maintenance; (2) Ground Freezing Technology (地盤凍結工法), with proprietary design, construction, and research capabilities, a frozen soil characteristics database of ~500 soil types, and over 500 completed projects; (3) Special Air Conditioning (特殊空調), featuring the Anicon laboratory animal breeding system, Losscon water-spray total heat exchangers (RCC and RAA types), and Deotron deodorizing heat exchangers; and (4) Crane and Automated Transport Systems (クレーン・自動搬送装置), including variable-speed inverter cranes, inversion-function cranes, overhead transport systems, and custom trolleys/lifters. Additionally, as a Hitachi authorized dealer, Seiken distributes motors, inverters, PLCs, industrial computers, and building equipment (elevators, parking systems). Supporting technical services include 3D airflow simulation, underground heat conduction analysis, and frozen soil mechanics research. The portfolio is characterized by bespoke engineering solutions for civil infrastructure, pharmaceutical/food manufacturing, and animal research facilities.
Differentiator
Problem solved
Functional benefit
Brands
- アニコン (Anicon): 一方向気流式実験動物飼育システム — A unidirectional airflow experimental animal breeding system for clean laboratory environments.
- ロスコン (Roscon)
- デオトロン (Deotron)
- 地盤凍結工法 (Ground Freezing Method)
- Labox / CPC
Products and services
- Air Conditioning and Sanitary Building Equipment Construction (空調衛生設備工事) Full-scope design and construction services for HVAC, cleanrooms, refrigeration/cold storage, plumbing, electrical systems, IoT/automatic control, environmental/energy-saving solutions, and HACCP-compliant food facility equipment. Targeted at commercial buildings, factories, and stores.
- Ground Freezing Construction (地盤凍結工法) Proprietary artificial ground freezing method using brine and liquid nitrogen systems to create frozen soil barriers for water cutoff and load-bearing applications in civil engineering. Includes design, research, and construction execution. Over 500 completed projects since 1962.
- Anicon Laboratory Animal Breeding System (アニコン) In-house-developed unidirectional airflow experimental animal breeding rack system (including Ap-type positive pressure variant) for SPF, Tg, and Ko animals. Delivered to 136 facilities with approximately 3,800 units since 1986. Used in conventional, SPF, and transgenic/knockout animal breeding rooms.
- Roscon Water-Spray Total Heat Exchanger (ロスコン) Water-spray type total heat exchanger in RCC (coil-to-coil) and RAA (stack) configurations. Prevents cross-contamination between supply and exhaust air while recovering thermal energy. RCC achieves 38–45% efficiency; RAA achieves 53–57% efficiency. Used in animal facilities, cleanrooms, and industrial exhaust heat recovery.
- Deotron Deodorizing Total Heat Exchanger (デオトロン) Exhaust deodorizing total heat exchanger combining honeycomb activated carbon filter with water-spray heat exchange. Simultaneously achieves deodorization and heat recovery for animal experiment facilities. Extends activated carbon filter life to approximately one year.
- Labox Cell Processing Facility / CPC-CPF Design and Construction (Labox) Cell Processing Facility (CPF) system for regenerative cell medicine, providing design and construction of facilities that safely and appropriately conduct cell culture processing for clinical applications. Targets pharmaceutical manufacturers and regenerative medicine companies.
- Cranes and Automated Transport Systems (クレーン・自動搬送装置) Overhead traveling cranes, bridge cranes, jib cranes, hoist cranes, variable-speed inverter cranes, inversion-function dual-hook cranes, guided cranes, and automated guided transport systems including trolleys, lifters, and film roll transport. Patented inversion-function crane handles up to 10-ton class loads.
- Hitachi Industrial Equipment Resale (日立特約店) Authorized dealer of Hitachi industrial products including motors, inverters, AC servo systems, PLCs, transformers, pumps, fans, power distribution monitoring, switches and circuit breakers, industrial marking systems, IoT/M2M components, power substations, clean air units, lighting, information systems, industrial computers (HF-W series), elevators, and parking systems. Domestic Japan coverage.
- Maintenance and Renewal Services (お客様サポート) Maintenance, inspection, repair, and renewal works for HVAC equipment, refrigeration systems, and cranes. Includes remote monitoring with 24-hour response, fault diagnosis, parts supply, and energy-saving retrofit diagnostics. Targets existing Seiken equipment customers.
- Takamatsuzuka Tumulus Conservation Project (高松塚古墳 保存対策工事) Ground cooling and HVAC installation for the Takamatsuzuka Tumulus (National Treasure, Asuka Village, Nara Prefecture), supporting conservation of ancient wall paintings through controlled temperature management. Conducted in cooperation with the Agency for Cultural Affairs.
Quantifiable outcome
- 冻土造成の予測精度：凍土性状データベース（約500種・2000件以上の試験結果）により高精度な凍上・解凍沈下予測を実現
- +4 more outcomes
Companies that use Seiken
Customer profileNamed customers14 records
Segments7 records
Ideal customer profiles5 records
Seiken technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature7 records
Seiken partnerships and signals
Strategic signalPartnerships
Six partnerships are on record, tiered flagship, minor and core.
- 独立行政法人 文化財研究所flagship2005年から国宝高松塚古坟壁画保存对策の坟丘地盤冷却業務に着手。文化庁の保存対策委員會と連携し、温度管理・解析を担当
- 大阪府立大学植物工場研究センターminor最適化空调プロジェクトに協力。CFD（数値流体力学）による温度・気流解析と植物解析のカップリングによる空调シミュレーションツール开发に協力
- 東京湾横断道路建設事業（首都高・運輸省等）flagship1993年に東京湾横断道路建設の地盤凍結工事に着手。大深度・大断面冻结に対応するため新技術を開発し、国家プロジェクトに貢献
- 京都大学防災研究所村山研究室core1959年に京都大学防災研究所の指導により地盤凍結工法の共同基礎研究を開始。村山朔郎教授の提唱により、外国技術導入なしに独自の発展を遂げる基礎を築いた
- 日立製作所（日立商品特約店）core1957年に日立商品特約店となり、現在も日立製作所・日立グループの特約店として、空調機器・冷凍冷蔵庫機器・産業機器・電子機器・エレベーター等の販売を展開。冷熱機器・産業機器・ビル施設の日立製品取り扱いが中心
- 日立冷凍機（日立冷たい関連製品）core1951年に日立冷凍機特定工事店となり、冷凍・冷藏・冷暖房機器的销售 및工事を開始。現在も日立グループ製品取り扱い継続
Scale indicators9 records
Recent moves9 records
Expansion highlights6 records
Seiken competitors and assessment
Company assessmentBroad incumbents
- Takasago Thermal Engineering Co., Ltd. Japan's largest HVAC mechanical contractor, providing air conditioning, plumbing, and cleanroom design-construction across commercial and industrial markets. Overlaps with Seiken's HVAC building equipment division across most enterprise and public-sector projects.
- Dai-Dan Co., Ltd. Japan-based HVAC and plumbing contractor with strong presence in industrial and pharmaceutical facility construction. Closely comparable to Seiken's cleanroom and pharma-related HVAC engineering capabilities, including cell processing facilities.
- Takenaka Corporation: One of Japan's top five general contractors with full-spectrum building and civil engineering capabilities, including specialty ground improvement and HVAC. Competes with Seiken as a prime contractor on integrated infrastructure projects.
- Taisei Corporation: Major Japanese general contractor with civil engineering, building construction, and M&E engineering capabilities. Comparable to Seiken on public infrastructure work and large-scale facility construction.
- Sanki Engineering Co., Ltd. Major Japanese HVAC and building services contractor serving office buildings, factories, and cleanrooms. Comparable to Seiken in HVAC installation, plumbing, and electrical contracting services for industrial and commercial facilities.
- Shimizu Corporation: Japan-based global general contractor with strong infrastructure, tunneling, and building systems capabilities. Competes with Seiken on underground construction and complex HVAC/mechanical engineering projects.
- Kajima Corporation: Japan's second-largest general contractor with extensive civil engineering, tunneling, and ground improvement capabilities. Competes with Seiken's ground freezing business on major public infrastructure projects.
- Obayashi Corporation: Major Japanese general contractor with civil engineering, building construction, and HVAC capabilities. Overlaps with Seiken on large-scale infrastructure projects and complex facility construction requiring ground improvement.
Direct peers
- Kito Corporation: Japan-headquartered manufacturer of chain hoists, wire rope hoists, and crane components. Competes with Seiken's crane and automated transport systems division in industrial material handling markets.
- Raito Kogyo Co., Ltd. Japan's leading specialty ground improvement and soil stabilization contractor, with overlapping ground freezing, soil mixing, and underpinning capabilities. Directly competes for the same public infrastructure and tunnel construction projects as Seiken's ground freezing division.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks6 records
Key highlights7 records
Customer concentration
Seiken social profiles
Digital presenceSeiken compliance and trust
Trust signalCompliance2 records
Seiken financial estimates
Financial estimateRevenue estimate
Valuation estimate
Seiken leadership team
Management profileNumber of profiles
Profiles7 records
Seiken subsidiaries and ownership
Company hierarchySubsidiaries2 records
Seiken funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Seiken M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Seiken
What does Seiken do?
Seiken is a multi-division engineering contractor providing (1) air conditioning, sanitary, electrical, and cleanroom building equipment construction; (2) proprietary ground freezing civil engineering construction with over 500 projects since 1962; (3) special air conditioning systems including the proprietary Anicon laboratory animal breeding system and Roscon/Deotron total heat exchangers; and (4) cranes, automated transport systems, and Hitachi industrial equipment resale. The company executes design-to-construction under direct contracts with government, infrastructure, pharmaceutical, food manufacturing, and academic research clients.
Is Seiken a public or private company?
Seiken is a private company. It is classified as unknown and is currently operating.
When was Seiken founded?
Seiken was founded in 1947. It employs 251 to 500 people.
Where is Seiken based?
Seiken is headquartered in Osaka, Japan, in the Asia region.
How does Seiken make money?
Five revenue lines are on record. 設備工事（空調衛生設備工事） is the primary driver. The others are 地盤凍結工法の設計施工, 日立製品販売（日立特約店）, クレーン・自動搬送装置の設計製作 and メンテナンス・サービス.
Who are Seiken's main competitors?
Broad incumbents on record are Takasago Thermal Engineering Co., Ltd., Dai-Dan Co., Ltd., Takenaka Corporation, Taisei Corporation, Sanki Engineering Co., Ltd., Shimizu Corporation, Kajima Corporation and Obayashi Corporation. Direct peers are Kito Corporation and Raito Kogyo Co., Ltd..
Does Seiken have an API?
No public API is recorded for Seiken.
What industry is Seiken in?
Seiken's product category is Specialized Engineering and Construction Services. Its primary akta.pro industry code is IMAFALAB, HVAC & Refrigeration Contracting, with a secondary code of BPAHAIAI, Systems Engineering & Technical Program Management. Its NAICS code is 238220 and its SIC code is 1540.