Thermal Break Capabilities: Advanced Technology at Work. We offer 2 types of thermal enhancement to meet the most demanding requirements your products need. Keymark uses the latest high-tech thermal break equipment at both of our facilites, to produce the highest quality thermally improved extrusions. Our dedicated in-house thermal break operations use automated "Fill & De-bridge" equipment incorporating Azon's patented Azo-Brader process for dependability you can count on. We have most recently installed the latest in European "Thermal Strut" equipment at our Fonda, NY facility to offer you optimum thermal efficiency/technology.