Ritmo SpA
- Italy. Design, development and manufacture of butt welding, electrofusion, hot gas and socket welding machines, auxiliaries, tools and accessories for plastic pipes and components. Technical information. Links to related sites. English and Italian.
- http://www.ritmo.it/

Dukane Corporation
- Manufacturer of plastics assembly equipment including ultrasonic, hot plate, vibration, and spin welders.
- http://www.dukcorp.com/

Prolas Produktionslaser GmbH
- Germany. Design and manufacture of machinery for laser cutting, welding and marking of plastics. Extensive technical information. Presentation videos. Multi-lingual site.
- http://www.prolas.de/

Hemant & Co.
- Manufacturer of pneumatic PVC and plastic welders and plastic embossing machines.
- http://www.hemantandco.com/

Forsstrom High Frequency AB
- Sweden. Development and manufacture of plastic welding machinery and systems for the production of signage, truck and swimming pool covers, oil booms, tents and sunshades, and inflatable boats. Technical information. List of global agents.
- http://www.forsstrom.com/

Markperi International
- Rebuilder of RF heat sealers and welders, and manufacturer of new heat sealing equipment.
- http://www.markperi.com

AEM S.A. de Electroónica y Maquinaria
- Spain. Designs and builds high frequency and hot mirror plastic welders, as well as metal induction heating units. Detailed product and application information. Site in English, French, and Spanish.
- http://www.aembarcelona.com/

Hapco Inc.
- Sells and services Leister equipment including roofing machines, welding equipment, high and medium pressure blowers and other hot air tools.
- http://www.hapcoinc.com

SS Industrial
- Company producing machinery and different components used in HDPE fusion and fabrication processes.
- http://www.ssindustrial.net

Plastic Hot Platen Welder
- Manufacturer of several models of hot platen and hot plate welders with several capacity models with servo controls or pnuematical controls.
- http://www.hotplaten.com

Sonitek
- Heatstaking and ultrasonic welders for plastic welding and assembly.
- http://www.sonitek.com/

Lou Zampini & Associates
- Marketing of plastic welding equipment and automated and assembly systems. Lines includes hand, power, and finishing tools.
- http://www.louzampini.com/

Fusion Technology
- Plastics welding and cutting machine specialists, geomembrane welding, hot air welding, fusion welding and other types of plastic welding machines.
- http://www.fusiontechnology.co.uk/

Ultrasonic Repair Center
- Company specializing in the repair of power converters, or ultrasonic transducers, used in ultrasonic welders for welding thermoplastics.
- http://www.ultrasonicrepaircenter.com