要样本该怎么说

Would you like to provide us some samples?
你们愿意给我们提供一些样品吗?
无论是当面还是信中或电话中这样说都比较委婉.
老外经常要我们公司提供样品的.

Could you give us the sample?

你可以说：
Could you show us the samples,please?(您能向我们出示一下样本吗？)

Could you show me your samples/specimens please?

could you kindly give me a set of smaples for reference?

Could you please provide us samples for reference?