### 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. Buyers are in urgent need of products or limited time limit, so it is recommended to choose SF express, and it is recommended to cash on delivery. SF Express has relatively guaranteed, and will pay after modifying the freight.
### Errors: There is a major error at "in". There is a major error at "need". There is a major error at "or limited time limit". There is a major error at "SF express". There is a major error at "it is recommended to cash on delivery. SF Express has relatively guaranteed, and will 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.