THE SPECIALISTS FOR PROTOTYPE AND NICHE SERIES The BÖLLINGER GROUP with their subsidiaries HPP, KONCAST and INPECA specialise in manufacturing innovative prototypes and producing development parts, as well as niche and special series production runs – primarily in the field of drive Engineering, chassis frame and steering mechanism. Across all processes and technologies, our service begins with expert consultation for our customers and covers everything from engineering to the production and demand-driven provision of components for the automotive, aviation, machinery and plant construction industries.