Knies Nutzfahrzeuge und Fahrzeugbau GmbH & Co. KG, based in Bösel, Germany, is a maker of agricultural and transport trailers specifically intended for the effective handling of crops, produce, and bulk goods. 

The company offers a diverse range of equipment, including three-way tipper trailers (KD series), tandem and tridem dumpers, bulk transport trailers, and livestock carriers. These trailers are commonly used in agriculture, forestry, and contractual enterprises to transport potatoes, cereals, silage, and other field crops. 

Knies trailers are known for their strong design, precision engineering, and long-lasting construction. They have a large load capacity, modern hydraulic tipping systems, and adjustable configurations to meet various field and road circumstances.