Seema Heaters
- India: Manufacturers of industrial electric heaters, controls and heating equipment.
- http://www.seemaheaters.com/index.htm

Cetal
- Manufacturer of electric heating elements including immersion heaters, finned heating, infrared generators, radiators, and terminal batteries.
- http://www.cetal.com

Vulcan Electric
- Manufactures wide range of metal sheath heaters including cartridge, strip, tubular, and immersion types. Can also supply units with optional fins, installation fittings, terminal housings, and thermostats.
- http://www.vulcanelectric.com

Amarc srl
- Italy. Specializes in manufacture of sheated heating elements and custom supply of industrial heaters. Applications include chemical and petrochemical, packaging, pharmaceutical, and plastic extrusion industries.
- http://www.amarc.it/

Accutherm
- Manufacturer of electric process heaters and controls. These products include standard and custom heaters used for liquid and gas heat transfer applications.
- http://www.accutherm.com/