Parabolic trough collector (IMAGE) Graz University of Technology Caption The parabolic trough collector is manufactured using industrial production methods such as injection moulding. Credit EMS - TU Graz Usage Restrictions This image may only be used in direct connection with the content of this press release. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.