### Chinese: 我去很多奶粉的厂家，接触很多奶粉的生产线。
### English: I went to many milk powder manufacturers and have contact with many milk powder production lines.
### Errors: There is a minor error of problems with grammar, other than orthography at "have contact". There is a minor error of incorrect translation is missing content from the correct translation at "I went to".

### Improved English: I have visited many milk powder manufacturers and gained contact with many production lines of milk powder.