According to article 35 of the Convention, the goods delivered by the seller must conform to the quantity, quality and specifications stipulated in the contract, and must be packed and packed in the manner commonly used for similar goods. Unless otherwise agreed by both parties. If there is no agreement, the goods shall be packed and packed in the same general manner as the goods in the same category. If there is no such general manner, the goods shall be packed and packed in a manner sufficient to preserve and protect the goods. Otherwise, it shall be deemed different from the contract. At the same time, the packaging provisions must specify the international practice towards marks and numbers and specify where the packaging costs are to be borne.