277.You can receive a special 15% discount， on orders place before the end of December.
在十二月底前订货的话,您将获得15%的特殊折扣.

278.If your order is large enough， we are ready to reduce our prices by 5%.
如果贵司的订单非常大的话,我们准备将价格降低5%

279. There is a 10% discount ，if your order in volume.
如果您订货的量大的话,将会得到10%的折扣.

280.If an order is exceptional large, we are prepared to increase the discount.
如果您的订单量很大的话,我司会准备提高折扣.