Our systems and processes are designed to meet the most demanding environmental and safety standards.
Fredy Sonderegger
Leiter Gesundheit, Sicherheit und Umwelt
Fredy Sonderegger

«Surface solutions worldwide»



«STI Group - Surface solutions worldwide» stands for surface technology aimed at making end products more economical, more functional and more successful. 


With its wide spectrum of technology and unique infrastructure, STI Group helps to create tomorrow's strategic competitive advantage today.  


Leading customers from the automotive and engine building sectors, from the paper, print, film, foil, textile, energy generation, food, aviation and shipping industries as well as general plant construction and defence technology count on STI Group's competence in delivering solutions.   



Edgar Oehler buys back former Hartchrom Steinach

19. December 2014
As of 1 December STI Surface Technologies International (formerly Hartchrom AG) is back in the hands of its previous owner, Edgar Oehler....


As a metal coating on a base material, chromium is non-hazardous and biocompatible. After extensive migration testing, the Veritas AG laboratory confirmed that STI hard chrome coating is food-safe, even when exposed to aggressive media such as ethanol/water 50% VV, plant oil and 0.3% acetic acid. STI ResistCoat, STI AlpineCoat and STI PrecisionCoat meet the high requirements regarding migration of metals into foodstuffs and are suitable for use in medical technology and food processing, and for packaging and dispensing machines. Thanks to the approval obtained for STI chrome systems, it is possible to achieve FDA conformity for components coated with the system. Our Customer Service engineers can provide advice for specific applications.