Trenchless Technology in Boston. Perma-Liner will be exhibiting our trenchless technology systems and equipment at the New England Water Environment Association (NEWEA) Expo next week in Boston. If you’re looking at getting into trenchless technology or would like to see the latest developments in the industry, this Boston expo is a great opportunity. Call 1-866-336-2568 to learn more about the Perma-Liner trenchless technology systems or to set up a live demonstration in Boston.