### Chinese: 4.重物产品一般发物流，另行联系。
### English: 4. Heavy products are generally sent to logistics, and will be contacted separately.
### Errors: There is a major error of incorrect translation does not accurately represent the correct translation at "sent to logistics". There is a major error of incorrect translation includes information not present in the correct translation at "will be contacted separately". There is a minor error of incorrect translation is missing content from the correct translation at "generally".

### Improved English: 4. Heavy products are sent by express companies; please contact us separately.