# Top 27 companies with in-house R&D in the Sarthe department

Tamtam tracks 27 companies with in-house R&D headquartered in the Sarthe department. This list ranks all of them by number of employees on LinkedIn, led by Groupe LDC, Centre Hospitalier du Mans and Le Mans Université. Their median headcount is 22. Half of them were founded in 2003 or later. The most common headquarters are Le Mans (9).

These companies are primarily mid-sized and large firms with in-house R&D in Sarthe, focusing on manufacturing, healthcare, and education. Noteworthy examples include Groupe LDC, a leading French poultry group; Centre Hospitalier du Mans, a comprehensive healthcare provider; Le Mans Université, offering diverse educational programs; and SCHOTTEL, which designs and manufactures propulsion systems for marine applications. These organizations represent key sectors driving innovation in the region.

The data reveals a strong presence of manufacturing companies, particularly in machinery and food production. ARO Welding Technologies specializes in resistance welding technology, while ESPRI RESTAURATION focuses on cooked meals and catering products. ODYSSEE Environnement specializes in sustainable water management, and MACH'TEL Groupe UNISTA designs automated and robotic machines. Many of these companies are established, with several founded before 2000, indicating a mature industrial base.

🇫🇷 Sarthe · 27 companies · Updated Nov 12, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Groupe LDC](https://www.tamtam.ai/c/groupe-ldc) (ldc.fr)<br>Leading French poultry group with multiple brands, offering quality products focused on health, origin, and accessible prices nationwide. | Food and Beverage Manufacturing | 🇫🇷 Sablé-sur-Sarthe | 1,642 | 1968 |
| 2 | [Centre Hospitalier du Mans](https://www.tamtam.ai/c/centre-hospitalier-du-mans) (ch-lemans.fr)<br>Provides comprehensive healthcare services with 1658 beds, offering general medical, surgical, and emergency care to patients. | Hospitals and Health Care | 🇫🇷 Le Mans | 1,305 |  |
| 3 | [Le Mans Université](https://www.tamtam.ai/c/le-mans-universite) (univ-lemans.fr)<br>Offers diverse labor-market-oriented programs, conducting research and teaching activities with global partners across two campuses, promoting student and researcher mobility. | Higher Education | 🇫🇷 Le Mans | 1,228 | 1977 |
| 4 | [SCHOTTEL](https://www.tamtam.ai/c/schottel) (schottel.de)<br>Design and manufacture of azimuth propulsion and complete propulsion systems for ships and offshore applications with global sales and service. | Machinery Manufacturing | 🇫🇷 Spay | 483 | 1921 |
| 5 | [ARO Welding Technologies](https://www.tamtam.ai/c/aro-welding-technologies) (arotechnologies.com)<br>Specialist in resistance welding technology providing robotic and manual guns, stationary machines, and control equipment for automotive and manufacturing industries. | Industrial Machinery Manufacturing | 🇫🇷 Montval-sur-Loir | 256 | 1949 |
| 6 | [unyc](https://www.tamtam.ai/c/unyc) (unyc.io)<br>Helping small and medium businesses access IT, telecom, and cybersecurity technologies through a reliable platform and extensive partner network. | Telecommunications | 🇫🇷 Le Mans | 215 | 2004 |
| 7 | [ESPRI RESTAURATION](https://www.tamtam.ai/c/espri-restauration) (espri-restauration.fr)<br>specialized in cooked meals, meats, sauces, and tailored catering products for social, commercial, and healthcare foodservice sectors. | Food and Beverage Manufacturing | 🇫🇷 Roëzé-sur-Sarthe | 156 |  |
| 8 | [ODYSSEE Environnement \| Water Treatment](https://www.tamtam.ai/c/odyssee-environnement-water-treatment) (odyssee-environnement.fr)<br>A company specializing in sustainable water management for industrial processes, focusing on ethical and environmentally friendly solutions, including consulting, research, development, and distribution | Chemical Manufacturing | 🇫🇷 Requeil | 112 | 2006 |
| 9 | [FRIO Entreprise (La Sommelière, Climadiff, Avintage, Provintech, ...)](https://www.tamtam.ai/c/frio-entreprise-la-sommeliere-climadiff-avintage-provintech) (groupefrio.com)<br>Group specializing in cold trade products and custom wine cellars, offering innovative solutions, after-sales service, and compliance with standards. | Appliances, Electrical, and Electronics Manufacturing | 🇫🇷 Arnage | 51 | 1993 |
| 10 | [Biodevas Laboratoires](https://www.tamtam.ai/c/biodevas-laboratoires) (biodevas.com)<br>Develops natural solutions for animal and plant nutrition and health, reducing phytosanitary products and antibiotics in agriculture through plant-based alternatives. | Biotechnology Research | 🇫🇷 Savigné-l'Évêque | 32 | 2005 |
| 11 | [MACH'TEL Groupe UNISTA](https://www.tamtam.ai/c/mach-tel-groupe-unista) (machtel.fr)<br>Design and build specialized automated and robotic machines for industries including automotive, cosmetics, pharmaceuticals, focusing on high-speed assembly of small parts. | Industrial Machinery Manufacturing | 🇫🇷 Coulaines | 29 | 1982 |
| 12 | [DUPUY ÉQUIPEMENTS](https://www.tamtam.ai/c/dupuy-equipements) (dupuy-equipements.com)<br>Design and manufacture of advanced smoke extraction equipment with integrated engineering, production, and dedicated commercial support for diverse projects. | Industrial Machinery Manufacturing | 🇫🇷 La Ferté Bernard | 27 |  |
| 13 | [Sarl TECH-PROCESS](https://www.tamtam.ai/c/sarl-tech-process) (tech-process.fr)<br>Specializing in manufacturing machines for the food industry, providing tailored solutions through project management, fabrication, and on-site commissioning Skilled in cooking, blending, conveying, and production processes | Machinery Manufacturing | 🇫🇷 Le Mans | 24 | 2018 |
| 14 | [SICA2M](https://www.tamtam.ai/c/sica2m) (sica2m.com)<br>Specializing in industrial conveying technology, SICA2M designs, manufactures, and installs automated systems to optimize production flow for major international companies | Machinery Manufacturing | 🇫🇷 Loué | 22 | 1932 |
| 15 | [AVENPLAST](https://www.tamtam.ai/c/avenplast) (avenplast.fr)<br>Specialized in plastic fabrication and machining, offering turnkey solutions with an in-house design team Experts in plastic materials processing | Plastics Manufacturing | 🇫🇷 Roëzé-sur-Sarthe | 18 | 1999 |
| 16 | [GECoE - Elventive France](https://www.tamtam.ai/c/gecoe-elventive-france) (gecoe.fr)<br>The company specializes in supporting innovative projects combining electronics and mechanics, assisting clients with product introduction, custom machine design, electronics manufacturing, and testing equipment production | Industrial Machinery Manufacturing | 🇫🇷 La Ferté-Bernard | 17 | 2005 |
| 17 | [CTTM - Centre de Transfert de Technologie du Mans](https://www.tamtam.ai/c/cttm-centre-de-transfert-de-technologie-du-mans) (almacoustic.com)<br>This company offers services in acoustics, materials engineering, chemistry, design engineering, and biological & medical engineering, providing custom solutions and R&D projects | Research Services | 🇫🇷 Le Mans | 15 | 1991 |
| 18 | [Sablé Injection](https://www.tamtam.ai/c/sable-injection) (groupe-plastivaloire.com)<br>Specialized in plastic parts production through injection molding for consumer products, particularly automotive interiors, with over 30 years of experience in various industries | Manufacturing | 🇫🇷 Sablé-sur-Sarthe | 15 |  |
| 19 | [Buki France](https://www.tamtam.ai/c/buki-france) (bukifrance.com)<br>Designs and distributes scientific and creative educational toys for children, supporting learning through experiments and thematic kits. | International Trade and Development | 🇫🇷 Le Mans | 14 |  |
| 20 | [MPS - Métallerie Planage Sarthois](https://www.tamtam.ai/c/mps-metallerie-planage-sarthois) (mps-72.fr)<br>MPS manufactures steel, stainless steel, and aluminum parts for various industries, as well as subassemblies and custom-built machines designed in-house | Fabricated Metal Products | 🇫🇷 Ruaudin | 13 |  |
| 21 | [Clémence & Vivien](https://www.tamtam.ai/c/clemence-and-vivien) (clemenceetvivien.com)<br>Offering organic, eco-responsible, vegan skincare and hygiene products made in France with natural ingredients and no petrochemicals. | Personal Care Product Manufacturing | 🇫🇷 Le Mans | 12 | 2015 |
| 22 | [Almacoustic](https://www.tamtam.ai/c/almacoustic) (almacoustic.com)<br>Specializes in acoustics research and development, innovative solutions, and testing services, building on a foundation of former CTTM expertise | Engineering Services | 🇫🇷 Le Mans | 11 | 2024 |
| 23 | [WRF Innovation](https://www.tamtam.ai/c/wrf-innovation) (wrf-innovation.fr)<br>Innovative product development, industrial process automation, and various engineering services including design, electrical, and fluid mechanics for small to medium series production | Mechanical Or Industrial Engineering | 🇫🇷 Marigné-Laillé | 6 | 2020 |
| 24 | [PHYTEC France](https://www.tamtam.ai/c/phytec-france) (phytec.fr)<br>A company in France acts as a technical and commercial bridge between its German counterpart and French clients, offering representation, distribution, and specialized development | Appliances, Electrical, and Electronics Manufacturing | 🇫🇷 Sillé-le-Guillaume | 4 | 2003 |
| 25 | [Qairos Energies \| Biomass technologies and solutions](https://www.tamtam.ai/c/qairos-energies-biomass-technologies-and-solutions) (qairos-energies.com)<br>Qairos Energies is a bioeconomy company specializing in biomass solutions, producing biogas locally for a sustainable circular economy | Renewable Energy Semiconductor Manufacturing | 🇫🇷 Mareil-en-Champagne | 2 | 2019 |
| 26 | [EneaD](https://www.tamtam.ai/c/enead) (enead.com)<br>Redefining data center cooling with patented single-phase immersion technology for AI, HPC. Unmatched thermal efficiency, scalability, sustainability, drastically reducing CO2 emissions, energy consumption. | IT Services and IT Consulting | 🇫🇷 Le Mans | 2 | 2022 |
| 27 | [ELVENTIVE FRANCE Defence & Aerospace](https://www.tamtam.ai/c/elventive-france-defence-and-aerospace) (belink-solutions.com)<br>An innovative electronics manufacturer offering prototyping, industrialization, EMS manufacturing, and PCB assembly for defense and aerospace industries | Defense and Space Manufacturing | 🇫🇷 La Ferté-Bernard | 1 | 1982 |

## 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.

## More company lists in the Sarthe department

- [The largest companies in the Sarthe department](https://www.tamtam.ai/l/largest-companies-sarthe) (331)
- [Retail chains in the Sarthe department](https://www.tamtam.ai/l/retail-chains-sarthe) (43)
- [Manufacturers in the Sarthe department](https://www.tamtam.ai/l/manufacturers-sarthe) (36)
- [Multinational companies in the Sarthe department](https://www.tamtam.ai/l/multinational-companies-sarthe) (25)

## The same list elsewhere in France

- [Companies with in-house R&D in France](https://www.tamtam.ai/l/r-and-d-companies-france) (8,749)
- [Companies with in-house R&D in Île-de-France](https://www.tamtam.ai/l/r-and-d-companies-ile-de-france) (2,695)
- [Companies with in-house R&D in Auvergne-Rhône-Alpes](https://www.tamtam.ai/l/r-and-d-companies-auvergne-rhone-alpes) (1,460)
- [Companies with in-house R&D in Occitanie](https://www.tamtam.ai/l/r-and-d-companies-occitanie) (680)
- [Companies with in-house R&D in Grand Est](https://www.tamtam.ai/l/r-and-d-companies-grand-est) (640)
- [Companies with in-house R&D in Provence-Alpes-Côte d'Azur](https://www.tamtam.ai/l/r-and-d-companies-provence-alpes-cote-dazur) (612)
- [Companies with in-house R&D in Nouvelle-Aquitaine](https://www.tamtam.ai/l/r-and-d-companies-nouvelle-aquitaine) (566)
- [Companies with in-house R&D in the Hauts-de-Seine department](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-seine) (510)
- [Companies with in-house R&D in the Rhône department](https://www.tamtam.ai/l/r-and-d-companies-rhone) (509)
- [Companies with in-house R&D in Pays de la Loire](https://www.tamtam.ai/l/r-and-d-companies-pays-de-la-loire) (480)
- [Companies with in-house R&D in Hauts-de-France](https://www.tamtam.ai/l/r-and-d-companies-hauts-de-france) (410)
- [Companies with in-house R&D in Brittany](https://www.tamtam.ai/l/r-and-d-companies-brittany) (366)
- [Companies with in-house R&D in the Haute-Garonne department](https://www.tamtam.ai/l/r-and-d-companies-haute-garonne) (323)
- [Companies with in-house R&D in the Bouches-du-Rhône department](https://www.tamtam.ai/l/r-and-d-companies-bouches-du-rhone) (320)
- [Companies with in-house R&D in the Isère department](https://www.tamtam.ai/l/r-and-d-companies-isere) (304)
- [Companies with in-house R&D in Bourgogne-Franche-Comté](https://www.tamtam.ai/l/r-and-d-companies-bourgogne-franche-comte) (261)
- [Companies with in-house R&D in the Nord department](https://www.tamtam.ai/l/r-and-d-companies-nord) (237)
- [Companies with in-house R&D in Normandy](https://www.tamtam.ai/l/r-and-d-companies-normandy) (227)
- [Companies with in-house R&D in the Gironde department](https://www.tamtam.ai/l/r-and-d-companies-gironde) (225)
- [Companies with in-house R&D in the Loire-Atlantique department](https://www.tamtam.ai/l/r-and-d-companies-loire-atlantique) (207)
- [Companies with in-house R&D in the Essonne department](https://www.tamtam.ai/l/r-and-d-companies-essonne) (198)
- [Companies with in-house R&D in Centre-Val de Loire](https://www.tamtam.ai/l/r-and-d-companies-centre-val-de-loire) (195)
- [Companies with in-house R&D in Paris](https://www.tamtam.ai/l/r-and-d-companies-paris) (1,249)
- [Companies with in-house R&D in Lyon](https://www.tamtam.ai/l/r-and-d-companies-lyon) (192)

## The same list elsewhere

- [Companies with in-house R&D in the world](https://www.tamtam.ai/l/r-and-d-companies-in-the-world) (34,346)
- [Companies with in-house R&D in Europe](https://www.tamtam.ai/l/r-and-d-companies-in-europe) (20,169)

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Source: https://www.tamtam.ai/l/r-and-d-companies-sarthe