All trade terms can be used, but air cargo declaration can only be the current situation and reasons for the misuse of FOB, CIF, CFR and air cargo trade terms. Through investigation, the author found that no new trade terms were used.

CFR, the full name of CostandFreight, refers to the delivery on board the ship at the port of shipment, and the seller has to pay the expenses required to transport the goods to the designated destination port.