728 We usually deal on a 20% trade discount basis with an additional quantity discount for orders over 1000 units.我们通常给予20%的商业折扣，外加订货1000件以上的数量折扣。
P> 728 We usually deal on a 20% trade discount basis with an additional quantity discount for orders over 1000 units.我们通常给予20%的商业折扣，外加订货1000件以上的数量折扣。