http://www.interseroh.com/en/

All our empty ERGELIT bags are appropriately recycled by our partner Repasack and Intersehro. 

http://www.stein.de/index_en.php

Specialist civil engineering office    

http://www.gstt.de/

German Society for trenchless technology    

http://www.ukstt.org.uk/members/#Section-H

United Kingdom society for trenchless technology    

http://www.istt.com/

International society for trenchless technology