The founder, Mr. Kaler Depp (1882-1944) was born in Duisburg, North Rhine-Westphalia in German; he followed his father to work on mining. In 1905, Depp family mining company was established to mainly engage in the exploitation of coal and iron ore. Due to the extensive use of protective equipment, hydraulic mining equipment company was founded for development and production of mining hydraulic jack and civilian machinery in 1908. the professional Depp hydraulic machinery research laboratory was founded in Germany's Ruhr industrial area in 1936. Factories and mining were expropriated by force by Nazi Germany during world war Ⅱ. In 1944, Mr. Depp died of a heart attack at the time of the Nazi tyranny.
During the Second World War, the Ruhr industrial area became one of the economic foundations of the German war economics, and other similar factories and mining also had occupied by the Nazi for heavy military machinery production. It was fortunate that Depp Hydraulic Mechanical Laboratory was reserved because of the national capital, then scientific research was rapidly developed during the post-war economic recovery period, laid a good foundation for the Depp hydraulic equipment application in the field of military, aviation, ship priority and civil trucks.
In 1980, Germany DeppKaler Limited was established by Carter Depp----the fifth generation descendant of Depp family. The company is committed to the development, production, marketing and distribution of types of hydraulic cylinders. The multistage telescopic cylinders and multistage double-acting telescopic cylinders are widely used in multiple service facilities like dump truck, dump trailer, garbage truck and aviation machinery, and in other machinery industries like solid waste compressor, construction machinery and crane, etc. The company has supplied hydraulic products for more than 300 large-scale enterprises and many high-end trucks like Mann, DAF, Mercedes Benz, Scania,etc.