VBG GROUP AB provides engineering services. It operates through the following divisions: VBG Truck Equipment, Edscha Trailer Systems, and Ringfeder Power Transmission. The VBG Truck Equipment division manufactures and supplies systems for truck industry such as coupling equipment, tyre chains, and dropside pillars for light trucks. The Edscha Trailer Systems division produces and sells sliding roofs for trailers. The Ringfeder Power Transmission division manufactures and markets mechanical power transmission, and energy and shock absorption. The company was founded by Herman Krefting in 1951 and is headquartered in VÃ¤nersborg, Sweden.