Increasingly, cities have to deal with raw-material shortages. A research factory called Resource-Efficient Production is providing help. The researchers and developers there work under the premise that companies need competitive manufacturing that uses raw materials economically or refrains from using them altogether. They test new technologies with partners from business to see if they are practicable. The vision of the experts in Chemnitz: a factory that largely supplies its own energy and does not emit harmful pollutants – thus becoming Germany´s production technology export hit.