在国际贸易中，还盘函是一种非常重要的商务信函。它通常在收到对方的报价后发出，表达我方对价格或其他交易条件的不满，并提出我方的修改建议或新的报价。以下是一篇英文还盘函的范文，供大家参考和学习。
Subject: Response to Your Quotation - Revised Offer Proposal
Dear [Supplier’s Name],
Thank you for your email dated [date] and the attached quotation for the supply of [product/service]. We have carefully reviewed your offer and appreciate the time and effort you have put into preparing it.
However, after internal discussions and further market research, we regret to inform you that we find your quoted prices to be on the higher side compared to the current market rates. To proceed with our negotiations constructively, we would like to propose an alternative offer based on our findings.
We are willing to purchase [quantity] units of [product/service] at a price of [new price] per unit, which represents a [percentage]% reduction from your initial quote. Additionally, we request a [specific term, e.g., 30-day] payment term instead of the proposed [original payment term].
We believe this revised offer aligns more closely with the current market trends and will allow both parties to benefit from a mutually advantageous business relationship. We hope you can consider our proposal and provide us with your feedback at your earliest convenience.
Please note that our revised offer is valid until [expiration date], after which we may have to reassess our requirements based on other potential suppliers. We look forward to receiving your favorable response and working together towards a successful partnership.
Thank you for your understanding and cooperation.
Best regards,
[Your Name] [Your Position] [Your Company] [Contact Information]
这篇还盘函的主要内容包括：感谢对方的报价、说明我方对报价的看法、提出我方的修改建议或新的报价、强调修改建议的合理性、设定还盘有效期以及期待对方的积极回应。通过这样的结构安排，既表达了我方的立场，又保持了商务沟通的礼貌和专业性。