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Established in 1913, Thermo Technologies (Annecy – Haute-Savoie) is a global leader in metal coating with strong technical expertise and innovation capabilities used to serve high-value markets. The Group has a broad offering with a wide range of products (special wires, EDM wires, diamond wires) and services (heat treatment, surface coating). The Group mainly serves high-tech industries (aerospace, defense, automotive, electrical connectors, medical, telecommunications, etc.) from seven manufacturing facilities.


Percentage holding


Native country

€119 million

Sales in 2023




of sales generated outside France



7 production sites22 September 2017

Investment date

Leveraging and expanding its wires expertise

The Group has reinforced its wire expertise by recently integrating the upstream casting process and developing Diamond Wires since 2017, demonstrating its ability to explore and enter new premium segments. With leadership positions in its historical markets, EDM and special wires, Thermo Technologies is ideally positioned to seize significant growth opportunities.

Consolidating a range of high-tech surface treatments

The Group is accelerating its growth through a proactive buy & build strategy aimed at expanding its geographical and technological expertise in the fragmented surface treatment market. Following the successful acquisition of STB Traitement Thermique in 2022, Thermo Technologies continued its strategic expansion in 2023 with Henriod, a Swiss-based company specializing in the precision surface treatment of precious metals tailored for the discerning markets of jewelry and haute joaillerie.

Highly committed group in terms of ESG

Thermo Technologies is instrumental in driving the environmental transition and electrification agenda across its target markets, positioning itself as a strategic partner for sustainable growth opportunities. The company promotes sustainable products and production processes.