We follow the vision laid down by Dr. Richard Seligman, the creator of the Aluminum Plant and Vessel Company Ltd., now known as APV in 1910, produced the world’s first commercially viable plate-and-frame Heat Exchanger in 1923. The first Paraflow Plate and Frame Heat Exchanger, made of cast gunmetal plates and contained in a frame, set the norm for today’s computer-designed thin metal plate Heat Exchangers that are used all over the world. The plate heat exchanger using stainless steel corrugated plate was created in 1930, establishing the groundwork for today’s plate heat exchanger.