If your prices are more favorable than those of your competitors we shall send you our order.
如果你方价格比其他竞争对手的优惠,我们将向你们订货。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份,将它寄回我方存档。