H&S Manufacturing Co. Inc. was founded by Mr. Lauri Heikenen and two partners in 1967. In the years that followed, Mr. Heikenen bought out the original partners. The business was started to manufacture and sell self-unloading forage boxes to farm equipment dealers. The original manufacturing facility was a 50′ x 100’ block building with a very small office located on 5 acres in the then-new Marshfield Industrial Park.

Founded in 1970 by Giovanni Signorelli, Sitrex began as a family business rooted in innovation and quality, quickly becoming a benchmark in agricultural machinery. Today, it stands as a global leader, exporting to over 60 countries while staying committed to efficiency, functionality, and advanced technology.