21st November 2007

To Whom is may concern.

Mac's Engineering have been purchasing and installing Electronic Rustproofing Systems from Couplertec for the past 7 years.

We have fitted approximately 2500 systems over this period to BMA Coal Mining Light Vehicles. We have found Couplertec Electronic Rustproofing Systems to be not only extremely effective in controlling corrosion, but very reliable and safe to use with little or no problems.

Mac's Engineering will only supply products to any person or company who wishes to use the best Electronic Sustem available.

Regards

ROSS FREDRICKSON
DIRECTOR