David James Campbell

Sentient Medical Ltd. develops hearing aids, middle ear implant to cure sensor neural hearing loss. The company was founded in 2005 and is headquartered in Dundee, the United Kingdom.

National Pump & Energy Ltd. provides rental equipment services to the mining, oil & gas and heavy industries. It products include Mine tuff dewatering, BBA, pioneer, Grindex - Minette pumps, Allight Sykes-FBP400, valves, break tanks, electrical equipment and filters. It also offers pump hire, sales, generator and compressor hire and sales, dewatering, hydro mining, system audits, disaster recovery, labour hire and value adding services. The firm serves to the mining, heavy industry, construction, municipal, and oil, gas, flood and disaster management industries. The company was founded on November 20, 2001 and is headquartered in Birtinya, Australia.

Airborne Energy Ltd. develops small scale wind turbines. Its products are generator designed for low rotational speeds. The firm also supplies novel vertical axis turbine. The company was founded on May 21, 2010 and is headquartered in Edinburgh, the United Kingdom.