Dear Sir，
    We would like to draw your kind attention to
our letter dated in which we enclosed our product
catalogue for your reference.
    As a follow-up to our previous letter， will you
be so kind to let us know whether our provided products
range is interested you or not? If you have any queries
or comments to us regarding our offer? We would be
grateful to hear from you with the most valuable
information to us.
    Once again， we wish to express our sincere
willingness of cooperation with you for developing
mutual benefits and a long-term relationship.Please
do not hesitate to contact us for further information
you may need. Your kind attention and soon response will
be highly appreciated.
Sincerely yours，

译文：

先生：
    我们很愉快地提醒您我公司寄出的信函连同随附的样品目录。
    为跟踪上次信函， 麻烦您告诉我司您是否对其些范围的产品感兴趣？对我们的报价有什幺建议吗？我们将非常感激您提出任何宝贵的意见。
    在此， 我们想再次表达我们愿与贵公司建立长期互利的合作关系的诚意。非常感谢您对此函的关注及建议。