### Chinese: 4.定制产品非质量问题不予退换货。
### English: 4. <v>Non-quality problems of customized products</v> will not be returned or exchanged.
### Errors: There is a major accuracy/mistranslation error at "Non-quality problems of customized products" within <v></v>.

### Improved English: 4. Exchange or return of customized products is not supported unless there is quality issue.
