Profile: Preferred Engineering is a subsidiary of Preferred Utilities Manufacturing Corp. We develop solutions to industrial maintenance and refueling challenges. We are involved in the design and manufacture of specially engineered mechanical tools & equipment to support nuclear power plant refueling as well as maintenance activities. Our products include main steam line plugs for MSIV testing, stud hole plugs, remotely actuated lifting devices, O-ring cleaners, Quik-Lok® fastening & seal systems and refueling tools.