Beijing Shidao Soloon Group
A manufacturer of photo-electric smoke detector, heat detector, intelligent fire auto-alarm linked system, collecting and distributing fire auto-alarm in China.
http://www.shidaosoloon.com

The AURIGA Detector
Ultracryogenic gravitational wave detector experiment at Legnaro National Laboratories, Italy.
http://www.auriga.lnl.infn.it/

Bertrik's bat detector page
Information on building your own bat detector
http://www.home.zonnet.nl/bertrik/bat/bat_indx.htm

Yeou Jyi Electronics Co., Ltd.
Manufacturers rf/emi detector, hidden cam detector, message bar, mini alarm, voice change, mini lighter.
http://www.showroom.com.tw

ESO - Optical Detector Team
Detector systems, documentation, research and development, and members of the team.
http://www.eso.org/projects/odt/

Heatran
Korea. Specializes in design of heat transfer equipment and related systems, including heat exchangers, heat recovery steam generators, waste heat boilers, economizers, condensers, heaters, and coolers.
http://www.heatran.com/

Heat Transfer Systems Inc.
Designs and manufactures broad range of thermal processing products. Includes heat exchangers, heat recovery boilers, and waste heat recovery units. Service include repairs, replacements, and modifications of existing equipment.
http://www.heattransfersys.com

Heat Pipe Technology, Inc.
Manufacturer of heat pipes for dehumidification and heat recovery
http://www.heatpipe.com/

Heat Treatment - preheat and postweld heat treatment
Maritime Stress pre-heat and post weld heat treatment products, equipment that we manufacture, sell, rent, lease
http://www.maritimestress.com

Hindustan Radiators & Heat Exchangers (P) Ltd.
India. Manufactures broad range of heat transfer equipment. Includes automotive and industrial radiators, air cooled and shell and tube heat exchangers, finned heat exchanger tubes, oil coolers, and waste energy recovery units.
http://www.hindustanradiators.com/