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Do I need to issue an invoice to buy gold bars from the bank?

Required. Whether gold and other valuables are recycled and sold by banks or gold shops, proof of the source of the gold bars is required, and the invoice or receipt when purchasing gold tickets is one of the most important pieces of evidence. Invoices refer to business vouchers issued and collected by all units and individuals when purchasing and selling goods, providing or receiving services, and engaging in other business activities.