(Translated from original letter)

From: Ufefys

To: rb bertomeu

Aranjuez, October 24th 1996

Dear Sir,

We are pleased to express our satisfaction with the fuel oil additive that you provide for our cogeneration [power] plant. Thank you to them, the corrosion problems have decreased as well as the exaust valves' blow-out and the sludge accumulation in the exhausts.

Likewise, we want to express our agreement for the service that you are providing in regard to combustion gas and fuel analytics.

We authorise the use of this letter for reference purposes for your products and services.

Signed Francisco Garcia Bru
General director