1. 邮件标题用客户名称与供应商名称, 譬如: To David McIntyre from Kevin Wang, 或者 To JC Penny from Blue Sun Company
2. 邮件标题用产品报价,譬如: Preferential quotation for Model 123 at the price of US$8.99 FOB Yantian
3. 邮件标题用客户求购的产品名称, 譬如:Model 123 digital photo frame, 或者 Product catalog of digital photo frames[收起]