Total Environmental
Engineering Solutions

We provide optimum
environmental control systems
with advanced technology

We carry out everything from design and construc tion to maintenance and constant research to provide a variety of facilities in every field to meet the diverse needs of our customers-from HVAC and plumbing systems for office buildings and large shopping centers, to biologically sterile rooms for pharmaceutical and food factories, to containment rooms in highly-secure laboratories, to clean rooms for the semi-conductor, optical and precision machinery fields. We're a total environmental engineering company, and we aim to bring nature and industry into mutually-beneficial coexistence around the theme of air and water technologies, so that we can better the lives of people and the environment in which they work.


Advanced industrial equipment

Image: Advanced industrial equipment

Safety, quality, productivity, and compliance with GMP/GLP are a must for pharmaceutical manufacturing facilities. Techno Ryowa provides solutions for this with our low-cost, high-quality environmental control systems that use cleanliness control, room-pressure control, containment and environmental-monitoring technologies. We also provide comprehensive support from validation planning to the implementation stage.

Environmental issues

Image: Environmental issues

The COP21 Paris Agreement came into effect in November 2016, and global interest has turned to energy conservation and environmental stewardship. Techno Ryowa, particularly its Technical R&D Center, is committed to research, study and technological development in the area to offer environmental solutions to our customers and reduce their environmental footprint.

Creating pleasant spaces

Image: Creating pleasant spaces

Creating pleasant spaces requires advanced technological systems that provide integrated control over not only the elements of temperature and humidity, but also acoustics and disaster prevention. Techno Ryowa's simulation techniques reflect our experience with a diversity of construction projects and our many years of research and experimental verification, and we use our experience and techniques in total environmental engineering to create pleasant spaces.

Full maintenance

Image: Full maintenance

Techno Ryowa has a full domestic maintenance network staffed by our specialized technicians, and we offer helpful support with our customers' equipment and facilities even after delivery and installation. We address the diverse needs of our customers by offering a full range of services that include everything from maintenance of equipment to overhaul planning of deteriorating equipment and facilities to make them run more efficiently and intelligently.


Clean Systems

Creating sterile spaces to guarantee product safety

Clean Systems

Supporting cutting-edge nanotechnology

Pleasant Spaces

Making pleasant spaces even more comfortable and clean using the latest environmental technology

and Eco-Friendly

Responding to the demands of this age with our own system technology and supporting the efficient use of resources and energy


Image: Toyosu Market(overall image)
Toyosu Market (overall image)
Provided:Metropolitan Central Wholesale Market
Image: Seiyo Municipal Hospital
Seiyo Municipal Hospital
Image: Kyoto Institute of Technology
Kyoto Institute of Technology
Matsugasaki Campus Bldg.No.15




Image: Domestic


Image: Overseas


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Outline (June 30, 2018)

Corporate name
¥2,746 million
December 23, 1949
Tokyo Stock Exchange (TSE) Second Section
Hidehiko Kuroda
26-20, Minamiotsuka 2-chome, Toshima-ku, Tokyo 170-0005 Japan
Tel. : +81-3-5978-2541
(registered headquarters:12-8, Shibadaimon 2-chome, Minato-ku, Tokyo 105-0012 Japan)
Primary Shareholders
Mitsubishi Heavy Industries Thermal Systems, Ltd.
MUFG Bank, Ltd.
Mizuho Bank, Ltd.
The Bank of Nagoya, Ltd.
The Keiyo Bank, Ltd.
Mitsubishi UFJ Trust and Banking Corporation
Meiji Yasuda Life Insurance Company
Tokio Marine & Nichido Fire Insurance Co., Ltd.
Main Banks
MUFG Bank; Mizuho Bank; The Bank of Nagoya; The Keiyo Bank

Description of Business

Industrial Equipment Business
Clean systems (dust/microorganism removal)
Temperature/humidity control systems
Energy/resource conservation equipment
Spot air conditioning systems
Industrial waste water/air treatment facilities
Refrigeration/low-temperature equipment
Clean effluent processing plants
Production process operations
Nuclear power-related equipment
General Building Equipment Business
General air conditioning equipment
Plumbing systems
Disaster prevention/fire extinguishing systems
Waste water treatment systems
District cooling/heating
Co-generation systems
Equipment Maintenance Business
Equipment diagnosis and overhaul; maintenance
Operational management of the above-listed equipment
design/construction of building ancillary equipment
manufacture/sales of related machinery