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The 50 largest companies with in-house R&D in Centre-Val de Loire

Tamtam tracks 195 companies with in-house R&D headquartered in Centre-Val de Loire. This list ranks the 50 largest by number of employees on LinkedIn, led by Université d'Orléans, CHU Orléans and ALL Circuits. Their median headcount is 222. Half of them were founded in 1973 or later. The most common headquarters are Orléans (7), Bourges (4) and Chartres (2).

🇫🇷 Centre-Val de Loire50 companiesUpdated Nov 12, 2026

This selection of companies with in-house R&D in Centre-Val de Loire represents a mix of public institutions and private firms, ranging from large employers to mid-sized operations. The region features established players in manufacturing and specialized services.

Key companies include ALL Circuits, a leading EMS provider in electronics manufacturing, and Plastivaloire, a European manufacturer of plastic components for motor vehicles. Antea Group - France offers environmental engineering and consulting, while Alstef Group designs automated solutions for airports and logistics. LVMH RECHERCHE focuses on cosmetic product development, and AUXITROL WESTON specializes in aerospace sensors. The presence of both universities and hospitals alongside industrial firms indicates a diverse R&D landscape.

#CompanyIndustryHeadquarters EmployeesFounded
1
Université d'Orléansuniv-orleans.fr

Public university offering diverse academic programs and conducting research within the Orléans and Tours educational region in France.

Higher Education 🇫🇷 Orléans 1,600 1306
2
CHU Orléanschu-orleans.fr

State-of-the-art university hospital located 1 hour south of Paris with 1,300 beds, modern facilities, and a staff of 5,323 professionals Located 10km from downtown Orléans

Hospitals and Health Care 🇫🇷 Orléans 1,368 n/a
3
ALL Circuitsallcircuits.com

Leading EMS provider specializing in automotive and industrial manufacturing, offering high-quality electronics design, industrialization, and manufacturing services globally with a strong focus on innovation and quality

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Meung-sur-Loire 1,154 2009
4
Eurofeueurofeu.fr

Eurofeu manufactures and distributes certified fire extinguishers, with a focus on innovation and sustainability, leading in the French fire safety market #letssharetheflame

Wholesale 🇫🇷 Senonches 1,153 1972
5
Antea Group - Franceanteagroup.fr

Provides environmental engineering and consulting services globally, focusing on water, industrial environments, infrastructure, and environmental data management for diverse clients.

Environmental Services 🇫🇷 Olivet 808 1994
6
Plastivaloiregroupe-plastivaloire.com

European manufacturer designing and producing plastic components including cockpits, front-end modules, and engine parts for motor vehicles through regional engineering and industrial facilities.

Manufacturing 🇫🇷 Langeais 786 1963
7
Alstef Groupalstefgroup.com

Designs, integrates, and supports automated turnkey solutions for airports, intralogistics, and parcel markets, offering baggage handling and internal logistics flow management.

Automation Machinery Manufacturing 🇫🇷 Boigny-sur-Bionne 727 1961
8
Cryostarcryostar.com

Expert in cryogenic rotating machines and solutions for medical, industrial gas, natural gas, hydrogen, and clean energy applications.

Industrial Machinery Manufacturing 🇫🇷 Hésingue 705 1966
9
LVMH RECHERCHElvmh.com

Creates exceptional makeup, skincare, and perfume products for LVMH luxury brands, focusing on performance, sensoriality, and environmental respect through advanced research and open innovation.

Research Services 🇫🇷 Saint-Jean-de-Braye 398 1981
10
Voltalisvoltalis.com

Develops technology to optimize electricity consumption, reduce energy use, relieve power grids, and avoid polluting power stations, primarily through connected thermostats offered to consumers.

Consumer Services 🇫🇷 Puteaux 369 2006
11
CAILLAUcaillau.com

Leading tier 1 supplier of stainless steel sealing clamps for automotive and aerospace industries, with unique expertise in international growth and product development

Manufacturing 🇫🇷 Romorantin-Lanthenay 367 1919
12
AUXITROL WESTONauxitrolweston.com

Global leader in aerospace sensors manufacturing, offering high precision solutions for aeronautics, defense, and industrial sectors with responsive aftersales support worldwide

Aviation and Aerospace Component Manufacturing 🇫🇷 Bourges 345 1888
13
Paragon IDparagon-id.com

A leader in identification solutions using RFID and NFC technologies, offering smart cards, tickets, labels, and tags to diverse markets worldwide

IT Services and IT Consulting 🇫🇷 Registered in Argent Sur Sauldre 305 n/a
14
CILAScilas.com

Develops, manufactures, and sells laser and optronics products/systems for defense, security, space, and industry, including laser designators, surveillance equipment, and optical components.

Defense and Space Manufacturing 🇫🇷 Orléans 292 1966
15
CENTRE HOSPITALIER REGIONAL D'ORLEANS

A medical practice company in Orleans, France, providing healthcare services at a regional hospital

Medical Practices 🇫🇷 Orléans 290 n/a
16
l'INSA Centre Val de Loireinsa-centrevaldeloire.fr

The company provides engineering education in various specialties such as industrial risk management, IT security, industrial systems engineering, and energy/environmental engineering, including landscape design

Higher Education 🇫🇷 Bourges 273 2014
17
ERBCerbc-group.com

Providing innovative in vitro and in vivo translational models and consultancy to improve preclinical research and de-risk drug development.

Biotechnology Research 🇫🇷 Baugy 270 1973
18
ITASitas.fr

Designs and manufactures broadcast and base station antennas, tower systems, and provides visual integration solutions for broadcast and wireless operators, including tower operations for TV and telecom.

Telecommunications 🇫🇷 Anet 267 1989
19
Groupe GOYERgoyer.fr

Designs, manufactures, and installs high-quality building facades, including aluminum facades and exterior glazing, for diverse architectural projects.

Construction 🇫🇷 Fougères-sur-Bièvre 260 1931
20
Idec - Groupe IDECidec-ingenierie.com

Design and construction of custom turnkey logistics and commercial buildings, ensuring quality, deadlines, pricing, and after-sales service.

Construction 🇫🇷 La Chaussée Saint Victor 259 2000
21
LACOUR GROUPgroupe-lacour.fr

Develops and markets intelligent applications, business software packages, and connected paint scales for automotive aftermarket professionals, supporting their digital transformation.

Software Development 🇫🇷 Saint-Doulchard 247 1985
22
DWSdws-engraving.com

Specializes in engraving machines for luxury brands, enabling personalized product customization across various materials and retail environments.

Retail 🇫🇷 Orléans 233 2017
23
Vermonvermon.com

Designs, manufactures, and controls ultrasound transducers and arrays for medical and industrial applications, supporting diagnostic modalities with superior imaging performances.

Medical Equipment Manufacturing 🇫🇷 Tours 227 1984
24
REDEX Groupredex-group.com

European engineering group specializing in advanced solutions for high precision industries, focused on machine drives, strip processing technologies, and precision rolling mills, with a fully European-made product portfolio

Industrial Machinery Manufacturing 🇫🇷 Ferrières-en-Gâtinais 226 1949
25
CHRYSO Francechryso.fr

Development of concrete additives, decorative concrete processes, digital solutions, and innovative technologies for sustainable construction materials.

Chemical Manufacturing 🇫🇷 Sermaises du Loiret 222 n/a

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26
BEG Ingénieriebeg-ing.com

Engineering and architectural services for commercial real estate, industrial facilities, and healthcare institutions across Europe and North Africa.

Real Estate 🇫🇷 Orléans la source 218 1966
27
CERIBcerib.com

A technical research and innovation center specializing in construction and concrete industry, providing support, testing, certification, and training services to various industrial sectors

Research Services 🇫🇷 Épernon 215 1967
28
DELPHARM SAINT REMYdelpharm.com

Leading European contract manufacturer producing various forms of medicines with high quality, punctuality, and economic balance for global pharmaceutical labs.

Pharmaceutical Manufacturing 🇫🇷 Saint-Rémy-sur-Avre 215 n/a
29
MONIN Europe Middle-East Africamonin.us

Premium French brand offering innovative syrups, fruit mixes, sauces, liqueurs, and smoothies with authentic taste and quality.

Wine & Spirits 🇫🇷 Bourges 200 1912
30
GUINAULTguinault.com

An international company based in France providing innovative solutions for the aviation industry, reducing environmental impact and operating costs for airlines worldwide

Aviation and Aerospace Component Manufacturing 🇫🇷 Orléans 185 1949
31
GROUPE LATTYlatty.com

Manufacturing sealing solutions, gaskets, and mechanical seals for mining, oil & gas, energy, chemical, and agribusiness industries worldwide.

Manufacturing 🇫🇷 Brou 175 1920
32
ADIWATTadiwatt.com

Designs, manufactures, installs metal structures and integration systems for solar power plants like carports, rooftop, ground-mounted systems for photovoltaic professionals.

Renewable Energy Equipment Manufacturing 🇫🇷 Fontaine-Raoul 165 2009
33
Olon Francegtp-bioways.com

Leading contract development and manufacturing organization specializing in tailor-made process development and manufacturing for biologics, antibody–drug conjugates, and nanomedicines.

Pharmaceutical Manufacturing 🇫🇷 Toulouse 158 2000
34
DELPHARM ORLEANSdelpharm.com

Acquired by Delpharm in 2019, this site specializes in manufacturing liquid and solid pharmaceutical forms, including mouthwashes, syrups, tablets, and sachets

Pharmaceutical Manufacturing 🇫🇷 Orléans 158 n/a
35
DELPHARM TOURSdelpharm.com

A major player in pharmaceutical contract manufacturing, with a focus on employee growth and quality, serving global pharmaceutical laboratories

Pharmaceutical Manufacturing 🇫🇷 Chambray-lès-Tours 142 n/a
36
GFP_techgfptechnologies.fr

Development of comprehensive SaaS software for medical insurance and risk management, including CRM, BI, and mobile applications.

Software Development 🇫🇷 Chartres 139 2020
37
Look Uplookupspace.com

Provides advanced space situational awareness and operations services, using radar technology and data analytics for satellite protection and space traffic management.

Defense and Space Manufacturing 🇫🇷 Toulouse 139 2022
38
Socofer Francesocofer.com

A company established in 1920 specializing in infrastructure, traction, services, and tooling for railway maintenance and manufacturing processes

Railroad Equipment Manufacturing 🇫🇷 Saint-Pierre-des-Corps 134 1920
39
Pakerpaker.fr

A company specializing in multipack machines and end of line equipment, ensuring all project dimensions are considered for optimal packaging solutions

Industrial Machinery Manufacturing 🇫🇷 Fontenay-sur-Eure 127 1985
40
SACRED GROUPsacredgroup.com

A company in the Rubber & Polymers industry with global presence, specialized in designing, selling raw materials, and producing parts for automotive OEMs

Rubber Products Manufacturing 🇫🇷 Saint-Lubin-des-Joncherets 126 1946
41
CBEcbe-tunnels.com

specialized engineering and manufacturing of steel moulds and automated plants for precast concrete tunnel segment production worldwide

Industrial Machinery Manufacturing 🇫🇷 Saint-Avertin 123 1987
42
LESTRAlestra.com

A leading French bedding manufacturer since 1914, specialized in comfort & safety through innovative, eco-friendly products such as comforters, pillows, and sleeping bags

Textile Manufacturing 🇫🇷 Nazelles-Négron 120 1914
43
MULLER AUTOMOTIVEmullerautomotive.fr

Design and manufacture vehicle inspection equipment including measurement chains, pollution control devices, and mobile stations with global customer support and maintenance services.

Industrial Machinery Manufacturing 🇫🇷 Chartres 115 1919
44
NOVINTECnovintec.com

A manufacturer of components, modules, and sub-systems for Aerospace, Process Industries, Motorsport, Space programs, and Nuclear industries, focusing on continuous improvement and R&D

Aviation and Aerospace Component Manufacturing 🇫🇷 Sully-sur-Loire 113 1972
45
ASB Aerospatiale Batteriesasb-group.com

Specializing in designing, producing, and selling thermal batteries for high-tech industries, leveraging expertise in defense power supplies for various sectors like aerospace and space

Defense and Space Manufacturing 🇫🇷 Bourges 112 1994
46
BARAT Groupbarat.com

International supplier for the Railway Industry, offering turnkey solutions for interiors, doors, partition walls, windows, and carbody fittings Emphasizes teamwork and continuous investment

Rail Transportation 🇫🇷 Le Controis en Sologne 112 1990
47
VERGNETvergnet.com

Specializing in renewable energy solutions, they provide unique technologies for off-grid networks, controlling energy production and ensuring reliability in harsh environments worldwide

Services for Renewable Energy 🇫🇷 Ormes 109 1989
48
Fillon Technologiesfillontech.com

Designs and manufactures advanced paint mixing machines, spray gun washers, and aerosol fillers for automotive bodyshop repair worldwide.

Machinery Manufacturing 🇫🇷 Faverolles 108 1954
49
Beirens SASbeirens.fr

Design, manufacture, install, and maintain industrial exhaust systems including chimneys, ducts, acoustic treatment, access, energy recovery, and filtration worldwide.

Wholesale Building Materials 🇫🇷 Buzançais 99 1987
50
VLADvlad.fr

A leading battery manufacturer for the medical and industrial markets, providing reliable battery packs and chargers for a wide range of applications

Appliances, Electrical, and Electronics Manufacturing 🇫🇷 Parçay-Meslay 93 1985

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How this list is built

Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026.

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