Well, I don't want to step on toes or cause any arguments, but I think I could answer this question.
Yellow Gold is a product specific to USP Labs, with standardizations and sources exclusive to USP Labs LLC., CC is more than welcome to source a Berberine HCL extract, but this would not be Yellow Gold, just as stinging Nettle Root Extract is not necessarily ActivaTE in its entirety.
May I ask why you would need Yellow Gold in bulk from another provider, however? Nutraplanet is selling a three month's supply for ~30 dollars.
Sorry CC if this was inappropriate.