When applying for a composition patent, does the combined product have new technical effects and solve new technical problems? If it is just a combination of two products, the functional effects are still achieved by each product. If they have their own functions, the application will not be approved.
For example, erasers, pencils and eraser pencils are three different products. The eraser pencil only combines the two, but their functions are still independent. Without patent inventiveness, the application will not be approved. But if a hexagonal prism pencil solves the problem of round pencils rolling easily compared to a round pencil, then it has inventiveness and the application will be approved. ;
Whether it is a composition or a non-composition, it depends on whether the product you are applying for has new technical effects and solves new technical problems.