Underwriters Laboratories Inc. (UL) is an independent, not-for-profit product safety testing and certification organization. We have tested products for public safety for more than a century. Each year, more than 17 billion UL Marks are applied to products worldwide.

The Flinn & Dreffein Engineering Company is the oldest and largest independent firm engaged exclusively in the design and construction of custom engineered industrial heat processing systems. The company specializes in turnkey installations of batch type and continuous process lines including some of the world's largest. Most of lines are equipped with Programmable Logic Controllers (PLC's) or ...