There are a few ways to make polished China Red Granite stairs less slippery:

1. Add non-slip adhesive strips: You can purchase non-slip adhesive strips that you can apply to the surface of the stairs. These strips provide added traction and can help prevent slipping.

2. Apply a non-slip coating: There are special non-slip coatings available that can be applied to the surface of the stairs to make them less slippery. These coatings help to create a textured surface that provides additional grip.

3. Use non-slip stair treads: Another option is to install non-slip stair treads on each step. These treads are designed to provide added traction and can help prevent slips and falls.

4. Keep the stairs clean and dry: Sweeping the stairs regularly and keeping them free of debris and moisture can help reduce the risk of slipping. If the stairs do get wet, be sure to dry them thoroughly to prevent them from becoming slippery.

Overall, it is important to take steps to improve the traction on polished granite stairs to ensure the safety of those using them.