### Chinese: 没想到当年看不起晶圆制造服务的巨头，如今却也要开始做晶圆代工。
### English: I didn't expect giants who looked down on wafer manufacturing services back then, but now they also have to start foundry wafers.
### Errors: There is a major error of incorrect translation has stylistic problems at "I didn't expect giants who looked down on wafer manufacturing services back then,". There is a major error of incorrect translation includes information not present in the correct translation at "but now they also have to start foundry wafers.". There is a major error of wrong grammatical register (eg, inappropriately informal pronouns). internal inconsistency (not related to terminology) at "I didn't expect giants".

### Improved English: Unexpectedly, the giant that looked down on wafer manufacturing services back in the days will also start to do wafer foundry now.