# Companies with in-house R&D headquartered in the Loire department
Tamtam tracks 101 companies with in-house R&D headquartered in the Loire department. This list ranks the 30 largest by number of employees on LinkedIn, led by SNF, École des Mines de Saint-Étienne and Desjoyaux pools. Their median headcount is 162. Half of them were founded in 1957 or later. The most common headquarters are Saint-Étienne (11) and Andrézieux-Bouthéon (4).
This selection of companies with in-house R&D in the Loire department includes a mix of established industrial firms and specialized manufacturers. SNF, with 2825 employees, develops water-soluble polymers for global water treatment. HEF Groupe specializes in surface materials engineering, while Clextral designs twin-screw extrusion technology. Focal-JMlab manufactures home audio loudspeakers and car audio systems. The list also features medical equipment companies like Gibaud, which focuses on health textiles, and Evolutis, an orthopedic implants company.
A notable pattern is the strong presence of companies in industrial manufacturing and specialized engineering. Many firms are headquartered in and around Saint-Étienne, including École des Mines de Saint-Étienne and ISTP ingénieurs, both higher education institutions. This concentration suggests a regional strength in advanced manufacturing and engineering, supported by local educational infrastructure.
🇫🇷 Loire · 30 companies · Updated Nov 11, 2026
| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [SNF](https://www.tamtam.ai/c/snf) (snf.com)
Develops and manufactures water-soluble polymers used globally for water treatment, resource preservation, recycling, and industrial process efficiency across diverse markets. | Chemical Manufacturing | 🇫🇷 Andrézieux-Bouthéon | 2,825 | |
| 2 | [École des Mines de Saint-Étienne](https://www.tamtam.ai/c/ecole-des-mines-de-saint-etienne) (mines-stetienne.fr)
Engineering school focused on sustainable innovation, academic excellence, cutting-edge research, and addressing industrial, digital, and environmental challenges. | Higher Education | 🇫🇷 Saint-Étienne | 761 | 1816 |
| 3 | [Desjoyaux pools](https://www.tamtam.ai/c/desjoyaux-pools) (desjoyaux.fr)
A global leader in buried pool construction, known for innovative technologies like active permanent casing and pipeless filtration systems since 1966 | Recreational Facilities | 🇫🇷 La Fouillouse | 502 | 1966 |
| 4 | [HEF Groupe](https://www.tamtam.ai/c/hef-groupe) (hef.group)
A global leader in surface materials engineering with a focus on tribology and photonics, driving innovation in various sectors worldwide | Engineering Services | 🇫🇷 Andrézieux-Bouthéon | 484 | 1953 |
| 5 | [Setforge](https://www.tamtam.ai/c/setforge) (farinia.com)
Forged components supplier with over 100 years of experience, offering complete development from design to production using hot, warm, or cold forging techniques. | Industrial Machinery Manufacturing | 🇫🇷 L'Horme | 341 | |
| 6 | [Clextral](https://www.tamtam.ai/c/clextral) (clextral.com)
Designing and developing twin-screw extrusion technology and industrial drying solutions for food, chemicals, and green industries, transforming raw materials into high-value products globally. | Machinery Manufacturing | 🇫🇷 Firminy | 283 | 1956 |
| 7 | [Focal-JMlab](https://www.tamtam.ai/c/focal-jmlab) (focal.com)
Designs, manufactures, and sells home audio loudspeakers, car audio systems, monitoring loudspeakers, and headphones, focusing on faithful sound reproduction and innovation. | Computers and Electronics Manufacturing | 🇫🇷 La Talaudière | 262 | 1979 |
| 8 | [ISTP ingénieurs](https://www.tamtam.ai/c/istp-ingenieurs) (istp.fr)
A pioneer in engineering education for over 30 years, offering specialized training for engineers in partnership with prestigious schools | Higher Education | 🇫🇷 Saint-Étienne | 229 | 1990 |
| 9 | [HAFNER Groupe](https://www.tamtam.ai/c/hafner-groupe) (hafner.fr)
Providing tailored products and innovative solutions to pâtisserie professionals, enhancing creativity and simplifying production processes daily. | Food and Beverage Manufacturing | 🇫🇷 Saint-Galmier | 212 | 1946 |
| 10 | [Nidec ASI S.A.S.](https://www.tamtam.ai/c/nidec-asi-s-a-s) (nidec-conversion.com)
Specializing in energy storage solutions in Europe, the company creates high-quality equipment for electric networks, EV charging stations, and infrastructure electrification | Industrial Machinery Manufacturing | 🇫🇷 Roche-la-Molière | 178 | 1972 |
| 11 | [Gibaud, une marque des Laboratoires Innothera](https://www.tamtam.ai/c/gibaud-une-marque-des-laboratoires-innothera) (gibaud.com)
A French brand specializing in health textiles, focusing on back, wrist, ankle, knee, leg, and foot pain relief, promoting mobility and well-being | Medical Equipment Manufacturing | 🇫🇷 Saint-Étienne | 175 | 1890 |
| 12 | [EUROTAB](https://www.tamtam.ai/c/eurotab) (eurotab.eu)
A company creating environmentally friendly solid cleaning products to promote hygiene, health, and well-being, offering innovations in dishwashing, disinfection, and more | Manufacturing | 🇫🇷 Saint-Just-Saint-Rambert | 173 | 1957 |
| 13 | [EVOLUTIS](https://www.tamtam.ai/c/evolutis) (evolutisfrance.com)
A French orthopedic implants company specializing in hip, shoulder, hand, and knee prostheses known for quality, innovation, and international presence with ISO 13485 certification | Medical Equipment Manufacturing | 🇫🇷 Briennon | 169 | 1999 |
| 14 | [STEPHANIX](https://www.tamtam.ai/c/stephanix) (stephanix.com)
Designs, develops, manufactures medical imaging solutions for hospitals, clinics, and private establishments worldwide, with a focus on French innovation and expertise. | Medical Equipment Manufacturing | 🇫🇷 La Ricamarie | 167 | 1985 |
| 15 | [FOREZIENNE MFLS](https://www.tamtam.ai/c/forezienne-mfls) (forezienne.com)
French manufacturer of high-quality cutting tools and accessories for primary and secondary wood processing, forestry, and sharpening machinery. | Machinery Manufacturing | 🇫🇷 Épercieux-Saint-Paul | 162 | 1977 |
| 16 | [SILEANE](https://www.tamtam.ai/c/sileane) (sileane.com)
Specialists in robotics and vision, providing standard and customizable solutions for industrial automation to improve productivity in various industries | Industrial Machinery Manufacturing | 🇫🇷 Saint-Étienne | 158 | 2002 |
| 17 | [Astrée Software](https://www.tamtam.ai/c/astree-software) (astree-software.fr)
An innovative industry 40 and MES software editor, focused on saving managers time and enhancing organization through user-friendly software solutions | Software Development | 🇫🇷 Saint-Étienne | 147 | |
| 18 | [SAM OUTILLAGE](https://www.tamtam.ai/c/sam-outillage) (sam-outillage.fr)
Family-owned French manufacturer specializing in innovative professional hand tools, focusing on sustainable development and advanced connected equipment. | Industrial Machinery Manufacturing | 🇫🇷 Saint-Étienne | 146 | 1906 |
| 19 | [Laboratoires CEETAL](https://www.tamtam.ai/c/laboratoires-ceetal) (ceetal.com)
Design and manufacture of chemical specialties providing hygiene and technical maintenance solutions for various professional sectors with environmental respect. | Chemical Manufacturing | 🇫🇷 Saint-Étienne | 143 | 1962 |
| 20 | [GROUPE SAB](https://www.tamtam.ai/c/groupe-sab) (groupe-sab.fr)
Specialist in aluminum foundry and machining, serving automotive large series and industrial small to medium series markets with competitive solutions. | Manufacturing | 🇫🇷 Belmont-de-la-Loire | 129 | 1975 |
| 21 | [NEYRET](https://www.tamtam.ai/c/neyret) (neyret.com)
French manufacturer specializing in luxury textile ribbons, labels, and accessories for fashion, luxury, and event markets worldwide. | Textile Manufacturing | 🇫🇷 Saint-Étienne | 114 | 1823 |
| 22 | [AHF](https://www.tamtam.ai/c/ahf) (ahf.mediunic.com)
For over 70 years, we design and manufacture a range of medical beds and furniture for healthcare and senior living facilities, focusing on improving patient wellbeing | Medical Equipment Manufacturing | 🇫🇷 La Tourette | 112 | 1947 |
| 23 | [Marrel SAS](https://www.tamtam.ai/c/marrel-sas) (marrel.com)
Design and manufacture hydraulic cylinders, arms, and hooklift systems for industrial vehicles ranging from 3 to 28 tons. | Machinery Manufacturing | 🇫🇷 Andrézieux-Bouthéon | 112 | 1919 |
| 24 | [Setic & Pourtier](https://www.tamtam.ai/c/setic-and-pourtier) (setic-pourtier.com)
Design and manufacture custom rotating machines for wire, telephone, energy, and data transmission cable industries focusing on quality and innovation. | Industrial Machinery Manufacturing | 🇫🇷 Roanne | 104 | 1860 |
| 25 | [KFS MOBILITY](https://www.tamtam.ai/c/kfs-mobility)
Global manufacturer specializing in railway seating, from research to maintenance Offering a variety of seats for high-speed trains, regional trains, trams, and metros Located in Loire, France | Railroad Equipment Manufacturing | 🇫🇷 Andrézieux-Bouthéon | 97 | 1946 |
| 26 | [e-Totem](https://www.tamtam.ai/c/e-totem) (e-totem.eu)
Designs, manufactures, installs, and manages electric vehicle charging stations and networks for businesses, public spaces, and individuals since 2012. | Electrical Equipment Manufacturing | 🇫🇷 Saint-Étienne | 90 | 2012 |
| 27 | [ERMONT - Fayat Group](https://www.tamtam.ai/c/ermont-fayat-group) (ermont.fayat.com)
Designing, manufacturing, and servicing hot-mix continuous asphalt plants, offering supermobile, supertransferable and stationary solutions since 1924 | Industrial Machinery Manufacturing | 🇫🇷 Lorette | 87 | 1924 |
| 28 | [BOA Concept](https://www.tamtam.ai/c/boa-concept) (boa-concept.com)
Designs and manufactures scalable intralogistics systems using IoT, robotics, and embedded intelligence for e-commerce, retail, logistics, and industry. | Transportation, Logistics, Supply Chain and Storage | 🇫🇷 Saint-Étienne | 86 | 2012 |
| 29 | [Issartel](https://www.tamtam.ai/c/issartel) (issartel.com)
For over half a century, we develop, manufacture, and maintain highly complex mechanical, hydraulic, and pneumatic equipment for industries like Defense and Nuclear | Industrial Machinery Manufacturing | 🇫🇷 Roche-La-Molière | 81 | 1961 |
| 30 | [PCI Machining](https://www.tamtam.ai/c/pci-machining) (pci-machining.com)
Support manufacturers with custom production lines combining machining, automation, process engineering, and project management for various industries. | Machinery Manufacturing | 🇫🇷 Saint-Étienne | 80 | 1917 |
## 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 11, 2026.
## More company lists in the Loire department
- [The largest companies in the Loire department](https://www.tamtam.ai/l/largest-companies-loire) (632)
- [Manufacturers in the Loire department](https://www.tamtam.ai/l/manufacturers-loire) (122)
- [Hardware manufacturers in the Loire department](https://www.tamtam.ai/l/hardware-companies-loire) (71)
- [Multinational companies in the Loire department](https://www.tamtam.ai/l/multinational-companies-loire) (66)
- [Contract manufacturers in the Loire department](https://www.tamtam.ai/l/contract-manufacturers-loire) (49)
- [Retail chains in the Loire department](https://www.tamtam.ai/l/retail-chains-loire) (49)
- [Family-owned companies in the Loire department](https://www.tamtam.ai/l/family-owned-companies-loire) (43)
- [Industrial Machinery Manufacturing companies in the Loire department](https://www.tamtam.ai/l/industrial-machinery-manufacturing-companies-loire) (39)
- [Public sector organisations in the Loire department](https://www.tamtam.ai/l/public-sector-organisations-loire) (39)
- [Distributors and wholesalers in the Loire department](https://www.tamtam.ai/l/distributors-and-wholesalers-loire) (31)
- [Professional services firms in the Loire department](https://www.tamtam.ai/l/professional-services-firms-loire) (29)
- [Aerospace and defence companies in the Loire department](https://www.tamtam.ai/l/aerospace-and-defense-companies-loire) (26)
- [Food and Beverage Manufacturing companies in the Loire department](https://www.tamtam.ai/l/food-and-beverage-manufacturing-companies-loire) (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) (8,750)
- [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) (613)
- [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) (321)
- [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)
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Source: https://www.tamtam.ai/l/r-and-d-companies-loire