(Translated from original letter)

From: Ufefys

To: rb bertomeu

Aranjuez, June 26th 2015

Dear Sir,

Our power plant of 12.6 MWh. Equipped with two Deutz MWM type BV 16 M 640 engine was inaugurated in early February 1996.

Since mid-April 1996 until the time of closure of the plant in January 2011 for fuel oil additive engine "RB BERTOMEU" beco F1/ASF was used for the treatment of fuel consumed in the plant.

During the 15 years of operation of the engines, the most important benefits that provided the additive "BERTOMEU RB" were:

   The Neutralization of corrosion and fouling waste exhaust valves and turbochargers than doubled the life of valves and turbos.

   Increase The service factor for the increase of TBO (time between overhauls) for the longer lifespan of the exhaust valves and turbochargers.

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

Signed M. Carmen Cruzado Rodriguez.
Director of Ercros. Pharmacy division.