订货（order）是买方为要求卖方供应具体数量的货物而提出的一种要求。此时，交易双方之间的陌生感已消除，可以说已经度过了接触障碍和难关。
写定货信时应注意以下几点：
（1）开头就直接说明订购的意图。常用的句式有 Please ship..., Please send..., We would like to order..., We would like to purchase..., 等等，明确说明你要购买。
（2）订货信应包括你要购买的商品的详细情况， 包括商品的名称、品质、数量、包装、价格条件、支付条件、装运方式以及需要对方提供的单据等。
（3）内容必须准确、清楚。不论是商品的价格还是商品的规格都应做到准确无误，否则会带来不必要的损失与麻烦。
下面是一篇日常订货信的例文，请大家体会一下。
Dear Sirs
Please send us your Milky White Chocolate Mints, 12-ounce packages, 24 packs per case, catalog No. 15c-123, at the price of US$10.59 per case and fifteen cases of Milky White Chocolate Bars, 6-ounce bars, 24 bars per case, catalog No. 18c-256, at the price of US$15.89 per case.
Please mail these items by air freight as we need them by 20th August and charge the amount to our Account No. 018325585.
If it is convenient, please include with the delivery a few samples of your new chocolates products, as you did with the past three years' orders. The samples help convince our customers to buy your delicious products.
Yours faithfully
