The contracted commodity is "Hand-made Writing Paper". The buyer examined the goods upon receipt, and found the paper was not completely hand-made. Therefore, the buyer refused to take delivery with an excuse of quality discrepancy. However, the seller thought "hand-made" never meant the paper should be made completely by hand. If the essential procedures were finished by hand, the paper was customarily deemed to be hand-made in the seller's country. Moreover, the seller had ever sent samples that had been confirmed by the buyer, and the goods delivered were exactly the same as the sample. Questions: How do you deal with this dispute? Why?