Our highly qualified workforce and over 55 years of experience guarantee top quality and precision.
Salvatore Villani
Supervisor quality control large parts
Salvatore Villani


The surface treatment group was formed in 1957 and grew out of the traditional Swiss company, Hartchrom AG from Steinach am Bodensee. Since 2007 STI Group has belonged to the construction and technology corporation AFG Arbonia-Forster-Holding AG, which is traded on the SIX Swiss Exchange. With its workforce of 600, seven production facilities and various representatives, the STI Group is represented worldwide.

Milestones (PDF, 512 kb)