1.We avail ourselves of this opportunity to approach you for the establishment of trade relations with you.
我们利用这个机会与你们接洽，建立业务关系。
2.We have the pleasure to introduce ourselves to you with the hope that we may have an opportunity of cooperating with you in your business extension.
我们有幸自荐，盼望能有机会与你们合作，扩展业务。
3.If our order is accepted, we shall immediately establish an irrevocable L/C.
如果我们的订单得以接受，我们将立即开出不可撤销的信用证。
