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July 30, 2020 10:04 ET | Source: NSF International

United Poly Systems Earns First NSF Certification for HDPE Electrical Conduit

ANN ARBOR, Mich., July 30, 2020 (GLOBE NEWSWIRE) -- United Poly Systems, LLC is the first manufacturer to achieve NSF International certification to UL Standard 651A for polyethylene electrical...