You can refer to the national technical code for building construction, and require that the plastic-steel aluminum alloy doors and windows should be installed with soft physical joint filling, that is, foaming agent or polystyrene board (the thickness of polystyrene board is difficult to control), and cement mortar cannot be used.
At present, the styrofoam industry is not very standardized, and the use of styrofoam varies from place to place. The developed coastal areas require the use of styrofoam, but some underdeveloped areas do not know enough about styrofoam, and many projects have not used it.