Testing & Commissioning	Instrumentation Controls and Softwate
http://www.bcxa.org	http://www.isa.org
http://www.aabchq.com	http://www.environmental.usace.army.mil
http://www.bsria.co.uk	http://www.automatedbuildings.com/
http://www.cibse.org	http://www.controleng.com
http://www.nebb.org	http://www.isc-ltd.com/
	http://www.theorem.net/control.html
Electrical/Power Quality	HVAC /Mechanical
http://www.epri.com/	http://www.ashrae.org/
http://www.era.co.uk	http://www.ansi.org/
http://www.ieee.org	http://yosemite.epa.gov
http://www.iee.org	http://www.lbl.gov
http://www.pti-us.com	http://www.ispe.org
http://www.powerquality.com	http://www.iest.org/
http://www.emcs.org	http://www.ctdoc.com
	http://www.maintenanceresources.com
	http://www.hpac.com/
Others-Singapore http://www.peb.gov.sg http://www.ies.org.sg http://www.spring.gov.sg http://www.expatsingapore.com