### Chinese: 本店出售的商品一律不退换
### English: The store sells goods are not refundable!
### Errors: There is a major error of wrong grammatical register (eg, inappropriately informal pronouns). internal inconsistency (not related to terminology) at "The store sells goods are not refundable!". There is a minor error of incorrect translation is missing content from the correct translation at "Missing from the store".

### Improved English: All products sold from the store cannot be exchanged or refunded.