在写给其他公司的信件结尾时，通常需要表达感谢、期待进一步合作等意思。以下是一些常用的写法：
1. Thank you for your attention to this matter. We look forward to hearing from you soon.
2. Please do not hesitate to contact us if you require any further information. Thank you for your time and cooperation.
3. We appreciate your business and hope to continue working with you in the future.
4. Thank you for considering our proposal. We look forward to the opportunity to do business with you.
5. If you have any questions or concerns, please feel free to contact us at any time. Thank you for your consideration.
在选择结尾语时，应该根据信件的具体内容和目的进行选择，确保表达出友好、专业和诚挚的态度。
上述事宜，请贵公司予以重视，切实解决。特此函告。
