Long working hours. The salary is too low. There are too few opportunities, it is normal to work 14 hours a day, during the internship. It's not bad to earn 60.70 a day 14 hour, but it's not bad for regular employees to get 3000, and 4000 is the best. Anyway, front-line workers are doing the most tiring work, enjoying the worst treatment and holding the lowest salary.
Management is not good, where you are the boss, you can't manage it, and the production workshop is a mess. What is that? It's rubbish. New employees and old employees scold.