The R&D department is better because fresh graduates can go to the R&D department because they are young, passionate and innovative, which naturally has a future; those who have been working for many years can go to the production department, which is good for them to make good production according to the technical requirements; and those who have three years of working experience in the R&D department can go to the technical department.
The sales department is better because sales is one of the company's core businesses, and the company's revenue mainly comes from the performance of the sales department, so the status and importance of the sales department is very high, and the salary and bonus of the sales department are also relatively high.