Mega Lift Systems
Pump system works by cycling a well open and closed. When open, a plunger interfaces between a liquid slug and gas. Gas below the plunger will push the plunger and liquid to the surface, allowing an additional volume of gas to flow from a producing well.
http://www.megaliftsystems.com/

MGM Well Service, Inc.
A south Texas company offering swabbing, slick line and plunger lift products and services. Includes explanations about traditional as well as hydraulic swabbing and a new two-piece plunger design.
http://www.mgmwellservice.com/

HP HydroPower S.r.l.
pompe a pistoni radiali, valvole ad alta pressione, impianti speciali componenti oleodinamici blocchi multivalvole pompe multiple componenti idraulici elettrovalvole
http://www.hphydropower.com

Fuji Techno Industries Co., Ltd.
Manufactures and sells non-pulsation plunger pumps using a special cam, patented in Japan, the U.S., Canada and Europe.
http://www.fuji-techno.co.jp/

Bran+Luebbe
German based manufacturer of metering, analyzing and processing equipment, including diaphragm and plunger pumps. A unit of SPX.
http://www.branluebbe.com/

Wiromet Mechanical Plants
Offers turbine blades, plunger pumps, phase shifters, fluid couplings, electro-cylinders and machining processes
http://www.wiromet.com/

Hydra-Seal, Inc
Manufacturer of piston rings and stainless plunger rings.
http://www.hydra-seal.com/

Cat Pumps
Triplex high pressure piston and plunger pumps and custom pumping systems for liquid applications
http://www.catpumps.com/

Milton Roy Company
Manufactures water and wastewater treatment products for municipal and industrial markets including leak detectors and metering, plunger, gear, rotary pumps.
http://www.miltonroy.com

GW Smith & Sons Inc.
Full service manufacturer of die casting lubricants. Site explains availability and use of die, plunger, and hydro slicks. Services include technical analysis of customer and job needs.
http://www.gwsmithandsons.com