Schiebel - Electric Actuators
Develops and manufactures electric actuators since 1958. Product range including all kind of actuators and controls as well as custom-made solutions.
http://www.schiebel.com/actuators/

Mmac Actuators
Our Actuators use the major components of hydraulic systems in a stand alone modular linear actuator. Suitable where high force-density and long operating life is required.
http://www.mmacactuators.com

ARTEKTRON AB
Developers of actuators and control systems for linear actuators. Based in Halmstad, Sweden.
http://www.artektron.se

Remote Control Sweden AB
Valve actuator for ball valves, butterfly valve, plug valves, knife gate valve, dampers
http://www.remotecontrol.se

Chemline -- Electric Valve Actuators
Electric Actuators from Canada's leading supplier Chemline Plastics Limited.
http://www.chemline.com/aseries.htm

Theory and Applications of Piezo Ceramic Actuators and PZT NanoPositioning Systems
Physikinstrumente (Germany) - very good information about piezo actuators and positioning systems.
http://www.physikinstrumente.com/tutorial/index.html

Mastergear Valve Actuators
MasterGear was founded in 1962 as a manufacturer of manual valve actuators, Mastergear has become the industry standard in manual valve actuators. Mastergear Worldwide serves valve makers all over the world from four international manufacturing facilities. MasterGear products are used extensively in oil, gas, water distribution and treatment, chemical processing and many other applications.
http://www.mastergear.ca

Macron Dynamics, Inc.
Linear actuators from Macron are guaranteed for life. Macron offers standard and custom linear motion products and engineering of custom automation and mechanical motion systems.
http://www.macrondynamics.com

Adaptive Materials Technology Ltd. (USA)
Technopolis Ventures Oy on Suomen suurin teknologia- ja osaamispohjaisia yrityksiä palveleva yrityshautomo. Kehitysohjelmissamme on yli 180 asiakasta pääkaupunkiseudulla, Oulussa, Lappeenrannassa ja Jyväskylässä.
http://www.otech.fi/otech/AdaptaMat/

EIM Controls, Inc.
Valve actuators and controls. Featuring network controls and electric valve actuators.
http://www.eim-co.com/