 By the early 1980s, the Automotive Products unit had manufactured over 100 million passenger car frames, and 50 million truck frames, in Milwaukee, and soon after the company opened its first electric motor assembly operations in Ciudad Juárez and Ciudad Acuña, Mexico.In 1990, it developed the first hermetic motor insulation system compatible with R-134a non-ozone-depleting refrigerant.In 1995, they acquired Peabody TecTank of Parsons, Kansas, allowing A.O.