Reception Our society Our job Our Color Offer Quality Control and Service Our partners Contact You are in Home Reception Site map - Legal Notice - Contact Steel surface treatment - Aluminum surface treatment - Stainless steel surface treatment TSO (Western Surface Treatments) is 40 years of experience and expertise in the surface treatments of stainless steel or aluminum parts. TSO also manages the application of epoxy powder paints and all other liquid paints. From the launch of Polyzinc 770, TSO adopted this anti-corrosion product and was one of the first applicators to use it. Keen to stand out and in order to provide its customers with a quality offer and a guarantee on anti-corrosion protection, TSO embarked on obtaining Polyzinc certification in September 2009, in partnership with AkzoNobel.