KATO Excavators and Crane Seal kits Quotes Kato is committed to the development of various industrial machinery and engineering machinery to meet the needs of the times of constant development and change. As early as the beginning of the 20th century, the internal combustion engine began to be built, and then hydraulic truck cranes and hydraulic excavators were gradually developed. In recent years, we have developed off-road tire cranes, all-terrain cranes and many other machines. Kato has led a revolution in the construction machinery industry.