1. The advance payment shall be made no later than five days before shipment.

预付款应不晚于运输前5天支付。

2. Can you tell me the after-sale service hotline?

您能告诉我售后服务热线吗？

3. Can you put me through to the after-sale department?

您能帮我接通售后服务部吗？

4. The company offers a one-month exchange guarantee.

我公司保证一个月内可以换货。

5. We offer after-sale service for free the within the warranty period.

在保修期内，我们提供免费的售后服务。