How is the salary for graduate students at China First Heavy Industry Marine Engineering Division?

I am from a heavy engineering institute. The marine engineering side seems to have no products yet, so the income is very good. Once the product is released, the salary may drop...and the first stage is a bit difficult, and the salary in all aspects is Not very good. The most important thing is that there is a problem with the management thinking of Northeastern enterprises. To put it bluntly, they are relatively backward. Think about it yourself.