AP/M Permaform offers trenchless rehabilitation solutions for badly deteriorated manholes, pipe and similar underground structures with their CentriPipe and Permaform systems. Both systems use specially engineered high-strength fine aggregate composite concrete products to provide fully structural rehabilitation of failing infrastructure. For addressing microbial-induced corrosion in sanitary systems, ConShield liquid additive is added to concrete mix, preventing the growth of acid-producing bacteria and preserving the life of the concrete. 800/662-6465; www.permaform.net; Booth 531.