CONTECH, manufacturer of industrial sheeter systems, has announced that it is offering its used equipment for sale at www.contech-usa.com.

The Construction Specifications Institute (CSI) had announced the launch of BuildCertified.com, a free, searchable database that will allow architects, specifiers, contractors, and other building professionals to search local markets for certified industry professionals within the building trades.

Energy Data Corp., which says it is the first licensed credit reporting agency operated exclusively for the retail heating fuel business, has introduced Fuelcredit.com, a credit-reporting tool for fuel dealers.

McQuay International announced that it is offering free software for consulting specifying engineers at its website, www.mcquay.com.

Danfoss Inc. has a North American website which is part of the company’s “Web Universe.”

Thermaflex has updated information about its FlexFlow Elbow™, a product designed to maximize efficiency in flexible duct installation.

Airxchange, Inc., a manufacturer of energy recovery ventilation components, recently announced the launch of its new website, www.airxchange.com.

Hvacr contractors can get some useful marketing tips and ideas on designing postcards by visiting www.ackray.com.

Build.com, an e-commerce and online marketing portal, announced that Myson, a manufacturer of home heating products, has entered into a multi-year agreement to participate in Build.com e-commerce and e-marketing programs.

Metal-Fab, Inc., has created a new website designed to showcase its new SureLock B-Vent Locking System.