### Chinese: 它们的原材料相同为何差价如此之大呢？
### English: Their raw materials are the same, why is the difference so large?
### Errors: There is a major error of incorrect translation is missing content from the correct translation at "Their raw materials are the same". There is a minor error of incorrect translation has stylistic problems at "The difference is so large".

### Improved English: Why are the prices so different when the raw materials are the same?