To remove water stains from Nano Glass Stone kitchen counters, you can follow these steps:

1. Mix two tablespoons of baking soda with a small amount of water to create a paste.

2. Apply the paste onto the water-stained area and gently rub it using a soft-bristled brush or cloth.

3. Let the paste sit for 10-15 minutes.

4. Rinse the area with water and dry it using a clean cloth.

Alternatively, you can also use a mixture of vinegar and water in a 50:50 ratio. Spray the solution onto the water stain and let it sit for a few minutes before wiping it clean with a cloth. Avoid using harsh chemicals or abrasive cleaners on Nano Glass Stone counters as they can scratch the surface.