The mobile prototype (which can still be seen in Friedeburg) has developed into an entire technology center. While continuing to perfect the tube chain chain conveyors, Schrage has also managed to construct more than 2,300 conveyor plants since 1987. His sons Ralf and Frank Schrage run the company now. The two progeny share their father’s passion for the job, especially when an unusual bulk-material sample arrives and poses a new challenge for the constructers, for example.