### Chinese: 4.重物产品一般发物流，另行联系。
### English: 4. Heavy products are generally sent logistics, please contact us separately.
### Errors: There is a major error of incorrect translation has stylistic problems at "logistics". 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.