请外贸英语高手帮我翻译一段话,谢谢(汉译英)

1.邮寄样品会增加很大一笔费用，是否可以用其他方法来验证我们的产品？
2.你是否在中国进口过产品？是否有熟悉的公司？你可让他们来我厂考察。
3.我认为双方的合作要建立在互相信任的基础上。
1.Would mail the sample increase very greatly an expenses, whether can use the product that other methods verify us?
2.Did you import a product in China?Whether company acquaint with?You can let them come to my factory investigation.
3.I think the foundation that both parties' cooperation wants to build up to be on the mutual trust.

呵呵，我觉得这几句中文就讲的不怎么委婉，我改一下.你的意思无非是这个客人也是新客人对他不怎么了解不想寄样品
I am very glad you took interests in our products and I so would like to supply you samples for quality check. Could you inform me your express account no. to avoid any delay? And if available for you, I so would like to invite you to our factory. 然后我建议你们针对新客人做一个questionnaire,把你们所要提的问题都做成表格让客人填写

1. Send sample product that can increase by very big sum of cost , come to verify us if
can use other method by post? 2. If your have entered port in China product? Whether
having the company who knows well that or not? You may let them come to my factory
examination. 3. I think that the both sides cooperation needs to build on the basis
trusting each other.