Unrefined Cuban cane sugars and Glucose Tolerance Factor?

Since soil in Cuba is very rich in chromium, cane sugars grown there
are high in Chromium III and glucose tolerance factor.

Are there any way to get solidified (brown sugar) but unrefined sugars
produced there to use as supplement for GTF in US or other countries.
I would like to get some samples of that in order to have a good
intake of GTF naturally (since exact structure is still unknown,
synthetic GTF is probably worthless to use as a supplement)


.