Profile: Gundle/SLT Environmental, Inc. (GSE) is in the business of manufacturing and marketing geosynthetic lining solutions, products and installation services around the world. We offer geosynthetic products to the waste, wastewater, water management, mining, agriculture, aquaculture, golf course, power and other industries. We deal with geomembranes, geosynthetic clay liners, geonets, geocomposites, nonwoven geotextiles, and concrete protection products. We provide technicians to build complete plastic components to simplify or expedite your installation.