What you said is wrong. One signed original packing list (printed with original) and two copies of packing list (printed with duplicate), both showing shipping marks. (Generally, it is signed and sealed with the import and export receipt and official seal of the enterprise. )

I suggest reviewing the practice of international trade. To tell the truth, this is the most basic knowledge requirement in the document terms. If it is wrong, it will affect the bank's presentation and negotiation.