Having learned from the three pigs' example, builders now use many more components other than straw and sticks when constructing a building. And MiTek USA makes a lot of those building components. The company manufactures metal connector plates and bracing, as well as machinery for making structural trusses, wall paneling, and related components for the construction industry. Subsidiary Heat Pipe Technology makes energy recovery and dehumidification systems, used primarily in research laboratories, hospitals, and manufacturing facilities. MiTek, a subsidiary of Warren Buffett's Berkshire Hathaway, also provides design, engineering, and job summary software.