Generally speaking, the investment scale is not large, and it is not the investment of manufacturing projects of well-known enterprises. There will be some things like preferential land prices or factory rental subsidies, partial tax return to local income, employment incentives for laid-off workers or landless farmers, and so on. If it is a high-tech industry like R&D, there may be some office space rental subsidies, partial return of personal income tax, R&D achievement transfer incentives, patent application incentives and so on. Pharmaceutical companies have other policies and so on. In addition, the general policy also includes encouraging enterprises to go public and establishing national or provincial laboratories. As for the content and amount of specific rewards, it needs to be negotiated according to the specific content of the project, and it cannot be generalized.
If it is a large investment or a well-known enterprise, it is another matter. All the requirements you want to ask, whether reasonable or not, can be asked first, and anything can be discussed. After all, performance comes first.