客户一直采购射频连接器，但最近一年没有从我们这里采购，询问一下客户是什么原因，我们是连接器工厂，我们提供一站式的服务，想和客户更深入的合作，用英文发一封邮件

Subject: Inquiry about recent lack of purchases

Dear [Customer Name],

I hope this email finds you well. We have noticed that your company has not made any purchases of RF connectors from us in the past year. We value your business and would like to inquire about the reasons for this change.

As a connector factory, we offer a one-stop-shop service for all your connector needs. We are committed to providing high-quality products and excellent customer service. Our team of experts is always available to assist you with any questions or concerns you may have.

We believe that a deeper partnership between our companies would be beneficial for both parties. We would appreciate it if you could share with us any feedback you may have regarding our products or services. We are also open to discussing any specific requirements or customizations that you may need.

Thank you for your time and consideration. We look forward to hearing from you soon.

Best regards,

[Your Name]

[Your Company Name]