Giovanni,
Thank you for the reply, I have recently located a supplier for B7 stamped cap screws.
On the Mendoza trip...
I finished up a project in Kuwait and needed a vacation. Never having been south of the Equator, I picked Argentina. I had considered making a side trip over to Sao Paulo, but the visa problem made that option impractical. Therefore my journey outside Buenos Aires took me to the wineries in Mendoza. Where we sought out Andean Condors, river rafting, ziplines and overindulgence of Malbec wine. (I assume 2 liters a day might be perceived by some as excessive, but... What are vacations for?)
I'm fairly sure I saw the refinery you speak of on one our side trips. It looked to be a 20,000 barrel (3300 cubic meters?) a day plant about an hour's drive Southwest of Mendoza.
I found the eastern flank of the Andes Mountains to be very similar to my home in Wyoming. Flora, fauna, terrain, elevation and climate made me comfortable.
I'll make it a point to visit Brazil on my next trip to South America, stop in and visit with you.
Happy New Year to you