Due to maunufacturer confidentially clauses I can't give the source, however, what I CAN tell you is that we have a high quality facility making and coating the papers for us and have these words on our packaging: “MADE IN THE EU”.
Feedback from customers has been that "Adorama’s Variable Grade darkroom paper has brighter whites and richer blacks than Ilford’s MG4, and at whopping savings!”
This is an IMPROVED version of the Resimbrom we used to carry, and there are sample packs available. 10 – 8x10” sheets; 5 of each surface:
VBSPF fiber base $5.75
VBSPR resin coated $3.95