### Chinese: 2.买家急需产品或有时效限制，建议选择顺风快递，建议到付，顺丰相对有所保证，修改运费后再付款。
### English: 2. If the buyer is in urgent need of the product or there is a time limitation, it is recommended to choose Shunfeng Express<v>,</v> it is recommended to pay on delivery, SF Express is relatively guaranteed, please pay after modifying the freight.

### Improved English: 2. It is recommended to choose SF-express delivery with payment upon arrival for buyers who need the products urgently or need to receive it within a time range; SF is relatively secure and you may pay after the shipping fee is edited.
