Heat Exchanger Design Inc - Offers the most innovative and economical heat transfer solutions while adhering to the highest standard for quality in the industry.
http://www.hed-inc.com/ more info...
Hughes Anderson Heat Exchangers Inc - Designs and builds shell and tube heat exchangers, primarily for the petroleum refining and petrochemical industries.
http://www.hughesanderson.com/ more info...
Xchanger - Offers fin-tube and fin-plate heat exchanger surfaces in aluminum, copper, steel, stainless steel and high performance alloys.
http://www.xchanger.com/ more info...