客户说他是忠实的家，不想换商，我该怎么回复？

在网上找到了一些客户，但是有些回复我说： I Checked , but we buy a little better now also from Chinese manufacturer. There is no reason fo change-over , we are loyal customer. 还有的回复说： We are received your mail well. However, we are not interested in a deal with you. We he the raw materials for the customers. This can not be changed easily. Thanks a lot.??等等类似的答复，我都疯了。。。。 看到这样的邮件我真是哭笑不得了，哭的是有一个客户消失了，笑的是不用浪费时间在这样的客户身上了 ，但是又觉得如果能争取过来那么我又多了忠实的客户， 但是我真正的不知道该怎么回复 他们呢，怎么才能让他么你给我下试单？？ 求各位大侠帮帮忙 看看该怎么回复，才能抓住他们的眼球和对他们的胃口呢，在此先谢谢各位了。