Predl Systems North America Inc. provides wastewater resistant thermoplastic liners to protect concrete manhole structures from corrosion due to H2S gas and abrasion. Predl Systems is a cost-effective full-service solution provider of proven custom and standard products with the added value of support services, professional expertise and years of know-how. We deliver precast manhole liner solutions for municipal sanitary sewer utilities through local Certified Precaster partners.