Apply for a certificate of origin from the local customs or trade promotion agency, proving that the country of manufacture is China. This is a necessary document for customs clearance in regions like the Middle East and Southeast Asia.

If the buyer's country is under international sanctions, or if the buyer fails to provide a legitimate source of funds leading to the bank returning the payment, all transfer fees and exchange rate losses incurred during this period are to be borne entirely by the buyer.

It completely falls under force majeure. After the delivery is completed (crossing the ship's rail) under FOB or CIF terms, the seller (us) bears no liability for refunds or compensation due to political risks or legal changes in the destination country that hinder customs clearance or lead to confiscation.