Flour import inquiry Spain

My name is D****** and I represent a Cuban company that is looking for suppliers to import into Cuba.
As a first step, we will make a purchase of between 20 and 25 tons of flour, but we believe that according to demand we will reach 75 tons per month.
At this moment we are contacting different suppliers and starting negotiations to find our best option in terms of quality, safety and price of the merchandise.
If it is not too much trouble we would like to receive a quote for 25 tons of flour with CIF price Mariel