能提供样品，但需要对方提供营业执照
Dear Sir，
We are pleased that your company is interested in our products. The samples you have requested are now available. They are free of charge， but it is our company policy to request a Certificate of Incorporation.
Samples will be sent immediately as soon as the Certificate of Incorporation has been sent to our fax number， （86-0577）62889098.
Sorry for the inconvenience. We sincerely hope this little formality will not stand in the way of our future relationship.
We hope you can understand our position and look forward to our further cooperation.
With best regards，
Hillary
拒绝买家的要求
Dear Sir or Madam：
Thank you for your inquiry dated 25 March. We are always pleased to hear from a valued company.
I regret to say that we cannot agree to your request for technical information regarding our products. The fact is that moat of our competitors also keep such information private and confidential.
I sincerely hope that this does not inconvenience you in any way. If there is any other way in which we can help you， do not hesitate to contact us again.
Truly yours
