Food industry wages are not high, to the standard of Hefei, Anhui.
1. Undergraduate male, into the food business, most of them do quality assurance quality control. If in the workshop, more night shift (12 hours), and then a few days a round of day shift. The company's main goal is to provide the best quality of service to its customers. Salary and wages: cocoa 2.5k or so, not counting overtime pay, in short, within 3k. This girl certainly can not do.
2. Other inspection quality assurance. For example, I do raw materials quality inspection, 8h a day, no night shift, double off, in Hefei 2k6.
3. graduate level. You can do R & D class, of course, is also 8h. Wage 3k5 or so. Suitable for girls. But boring, no sense of achievement.
4 doctorate level. R & D ah, product development ah and so on, also these, the salary is ominous.
All in all, as a graduate of six months of the bitter people studying food, food work is either tired, or low wages.
But after graduation you may find that majors are all a puff of smoke, and a lot of interdisciplinary ones. Girls can also get into food companies as housekeeping and clerks.
As for those documents you mentioned, I don't think it's necessary unless you want to change your career. But there is no harm in learning more.
Maybe I don't have the opportunity to enter a good enterprise like Ma's ah, just put what I know.