Gold bars bought in the bank can be sold to gold shops, provided that the gold shops are willing to buy them and give them the right price. After buying gold bars in the bank, you can go directly to some jewelry stores and pawn shops for trading.
Generally, it is problematic to buy gold bars or gold wares for sale, because one of the characteristics of gold sales organizations is that they will not accept gold sold by other organizations, even if the instructions of gold are stamped with the seal of the bank.
It is a rule that all banks and gold shops only recycle their own gold bars.