(Translated from original letter)
QUESERIA IBERICA, AT. Herrera de Pisuerga, 20th June 2015
Hereby, I certify that our cogeneration plant equipped with a
Man engine, model 12V 40/45, power 7,260 kw., began its activity in March
1997 with the name GRANJA LA LUZ (currently QUESERIA IBERICA AT).
In late 2002, after becoming aware of the qualities and benefits that the use of fuel oil additive "rb bertomeu" beco F1/ASF has, we started the
use of the said additive for treating heavy fuel oil.
After checking that all the advantages advertised by the
additive manufacturer, we decided the continued use of "rb bertomeu" beco Fl/ASF and today we still use the fuel oil additive with full satisfaction.
I authorize the display of this document for references.
Signed: D. Miguel Angel Franco
Manager of Planta de Cogeneración y Energia
Queseria Iberica AT